Introduction

This manual provides technical guidance for the installation, configuration and operation of the W-Modbus communication device. Designed to serve as a direct replacement for traditional cabling, this device enables W-Modbus communication over a wireless link.

The W-Modbus device maintains compatibility with standard Modbus and is intended for use in industrial automation, building management systems and other applications where Modbus is required. By eliminating the need for physical cabling, installation time and maintenance complexity are reduced while preserving the reliability and performance of a cabled counterpart.

This manual outlines the device’s features, technical specifications, setup procedures, and troubleshooting steps to ensure proper setup or integration into an existing W-Modbus network.

Product Overview

W-Modbus simplifies Modbus installations by replacing the control cable with a wireless connection. This significantly alleviates the downsides of running control cables, such as daisy-chaining, installation planning and troubleshooting.

W-Modbus is built on LumenRadio's MiraOS, which runs the MiraMesh network stack.

A W-Modbus unit can be configured either as a Gateway that is connected to a Modbus Client, or as a mesh node that is connected to one or more Modbus Servers. A W-Modbus network can consist of up to 100 mesh nodes.

System Overview - Modbus Network

Installed networks are not limited to an initial configuration and can be expanded or reduced as necessary. Additionally, problems with wireless connectivity (for example, increased radio noise in the area) can be remedied by repeater installation.

Glossary of Terms

Term	Definition
RTU	Remote Terminal Unit. In the context of LumenRadio's products, it refers to the Modbus RTU protocol.
MS/TP	Multidrop Serial/Token Passing. In the context of LumenRadio's products, it refers to the BACnet MS/TP protocol.
W-Modbus	LumenRadio's implementation of Wireless Modbus RTU.
W-BACnet	LumenRadio's implementation of Wireless BACnet MS/TP.
Gateway (Root Node)	The central gateway/master/root device of a W-Modbus network.
Node (Mesh Node)	Mesh Nodes, or Nodes, serve as subsidiary devices of a W-Modbus network.
MiraMesh	The underlying wireless mesh networking technology which is responsible for delivering W-Modbus data wirelessly.
MiraOS	The operating system which W-Modbus is built on top of.
Wireless Repeater	Any W-Modbus device that relays data packets between other devices in the mesh network. Note that every W-Modbus device functions as a repeater automatically, even if no Modbus device is connected to it.
Commissioning Network	A temporary W-Modbus network consisting of a Gateway in commissioning mode and one or more Mesh Nodes in commissioning mode, used for onboarding new devices.
Secure Network	A W-Modbus network that has transitioned from Commissioning Mode to Secure Mode, enabling long-term communication of application traffic using unique network credentials for each network.
Gateway Commissioning Mode	The mode in which the gateway device is advertising its existence using known network credentials such that mesh nodes in commissioning mode can join.
Gateway Secure Mode	The mode in which the gateway is advertising its existence using network credentials unique to the gateway.
Mesh Commissioning Mode	The mode in which a mesh node is using known network credentials such that the node can find a gateway that is in commissioning mode.
Mesh Secure Mode	The mode in which a mesh node has been commissioned by a gateway and is using secure and unique network credentials to transmit data wirelessly.
Baudrate	The number of bits per second when transmitting data over a serial connection such as RS485. Common baud rates for W-Modbus include 9600, 19200, 38400, and 76800.
Stop Bits	Stop bits mark the end of an RS485 data frame.
Parity	An error-detection mechanism used in serial communication. A parity bit is appended to each data frame to verify data integrity. Note that parity is not configurable in BACnet MS/TP.
RS485	A physical layer standard for serial communication. RS485 defines the electrical characteristics of the wired bus on which protocols like Modbus RTU and BACnet MS/TP operate. LumenRadio's W-Modbus/W-BACnet devices connect to RS485 buses.
Wall Mount (form factor)	A wall-mounted W-Modbus device. Can be used as either a Gateway or Mesh Node.
Wall Mount PRO (form factor)	Identical to the base model of the Wall Mount, but supports up to 4 connected local devices when in any of the Mesh Modes.
DIN rail (form factor)	A DIN rail-mounted W-Modbus device designed for installation in electrical cabinets. Can be used as either a Gateway or Mesh Node.
DIN rail PRO (form factor)	Identical to the base model DIN rail, but supports 4 connected local devices when in any of the mesh modes.
Compact (form factor)	The smallest W-Modbus form factor, designed to be used only as a Mesh Node. It is configured via a single button and does not have DIP switches or three-pole switches.
Radio Module (or just Module)	A hardware component consisting of a CPU with an integrated radio chip, on which MiraOS and the W-Modbus firmware run.
W-Modbus module (form factor)	Every W-Modbus product contains an nRF52840 MCU running the W-Modbus firmware. This combination of hardware and firmware — referred to as the module — is also available as a standalone component, allowing OEM customers to integrate W-Modbus directly into their own products.
MWA-N2 module	This is one of the radio modules on which W-Modbus can run. The MWA-N2 module has support for an external antenna, but lacks an internal antenna. The MWA-N2 module is used on the Wall Mount and Compact form factors.
MWA-N3 module	This is one of the radio modules on which W-Modbus can run. The MWA-N3 module has a built-in internal antenna, but has an external antenna port as well. The MWA-N3 module is used on the DIN rail form factor.
DFU over BLE	A Device Firmware Update (DFU) over Bluetooth Low Energy (BLE) is a method of upgrading the firmware running on a W-Modbus wirelessly. Such an update can be performed from a phone running the W-Modbus app.
FOTA update	A Firmware Over The Air (FOTA) update is a method of distributing new firmware over the mesh network to all nodes in a secure W-Modbus network, without requiring physical access to each device.

| PDR (Packet Delivery Ratio) | The percentage of packets that are successfully delivered to their destination. A PDR of 95% means that 95 out of 100 packets are successfully delivered, while 5 packets are lost or corrupted during transmission. |

Safety Information

Disconnect Power Before Installation: Always turn off the power supply before wiring or servicing the device. Never work on live circuits.
Verify the Power Source: Confirm that the power source matches the product's power specification.
Check Polarity for DC Power: When using 12/ 24 VDC, verify correct polarity. Incorrect polarity may damage the device, the power supply or other devices connected to the same power source.
Use Appropriate Wiring: Choose cables with the correct gauge and insulation suitable for the installation environment.
Prevent Short Circuits: Ensure no bare conductors are exposed and all wiring is secured to avoid accidental contact.
Include Overcurrent Protection: Use properly rated fuses or circuit breakers to protect both wiring and the device.
Follow Local Electrical Regulations: All installation work must comply with applicable electrical codes and safety standards.
ESD Measures: Wear proper ESD protection and ensure all equipment is correctly grounded to prevent unnecessary damage during installation.
Qualified Personnel Only: Installation and servicing should only be performed by trained and authorized technicians.

Warnings and Precautions

Read these instructions and safety instructions carefully before using the product.
Never submerge the product in water or any other liquid.
Do not install the product in wet environments, or environments where relative humidity exceeds 95%.
Do not install or use the product if it is visibly damaged.
Do not attempt to modify the product. Any such modification will void the product warranty.
The product should not be used for safety-critical tasks (e.g., medical devices). {{/warning}}

ELECTRICAL SAFETY

Only qualified electricians or service personnel trained by LumenRadio may perform installations and/or modification to an existing electrical installation. Always follow local/national rules when performing this type of electrical installation. When connecting a 24V isolation transformer, this must be done in accordance with IEC 61558-1. {{/warning}}

POWER AND RS485 CIRCUIT CAUTION

W-Modbus uses a half-wave rectified circuit. It should not share a VAC transformer with a device using full-wave rectified circuit. The same VAC transformer can be used for W-Modbus and other device(s) only under the following conditions:

The other device(s) are half-wave rectified.
All power connections must have the same polarity. The ”+” terminal of W-Modbus must not be connected to the ”–” terminal of another device. {{/warning}}

System Description

This section describes the W-Modbus system and its components, as well as the supported Modbus protocols and their features. It also includes an overview of the wireless communication technology used by W-Modbus.

System Overview - Modbus Network

W-Modbus Mesh Network

The W-Modbus Gateway is the central gateway/master/root device of a W-Modbus network. All wireless unicast (device-to-device) messages sent by mesh nodes must pass through this device before being forwarded to the destination mesh node.

The Modbus Client/Master must be connected to the W-Modbus Gateway of the network in order to be able to query devices connected to Slave/Mesh nodes.

Mesh Nodes, or Nodes, serve as subsidiary devices of a W-Modbus network. When sending data over the network, all unicast messages will be routed through the Gateway.

MiraMesh is the underlying wireless mesh networking technology which is responsible for delivering W-Modbus data wirelessly. MiraMesh is also responsible for dynamically changing the hopping path of data packets between nodes.

Once a mesh node joins the gateway, the gateway will send secure credentials that will be used once the network is switched to Secure Mode.

All network traffic is encrypted using AES-128 encryption, and the network credentials are unique to each gateway. This means that even if two W-Modbus networks are in close proximity to each other, they will not interfere with each other as they will be using different network credentials and encryption keys.

Commissioning Network

A W-Modbus network is comprised of one Commissioning Gateway and up to 100 Commissioning Mesh Nodes. Nodes in Commissioning Mode will advertise with pre-determined network credentials, meaning they can hear the Gateway advertising its existence, allowing mesh nodes to form a network.

Secure Network

Once a Commissioning Network is switched to Secure Mode, all connected nodes will reboot synchronously, and the secure network credentials unique to the gateway will be used. A secure network is comprised of one gateway, and one or more mesh nodes, all of which have been commissioned/secured, and are thus using network credentials and encryption keys unique to the gateway of that network.

Config Distribution

The gateway can distribute its bus settings (baud rate, etc) to the rest of the nodes in the network.

Unless "Use local configuration" is enabled on the [dip switches](#Dip Switches) of the node, the gateway configuration will be used.

Firmware-Over-The-Air (FOTA)

Starting with firmware version 3.0.0, W-Modbus supports Firmware-Over-The-Air (FOTA) updates. FOTA allows the gateway to distribute new firmware to all nodes in a secure W-Modbus network without any user interaction. This means that when a new firmware version is released, the gateway can automatically update all nodes in the network to the latest firmware version without the need for a technician to manually update each node.

Update the gateway to the latest firmware version, and the gateway will take care of updating all nodes in the network.

Device Overview

#	Component	More information
1	LEDs	[LED Status Indicators](#LED Status Indicators)

| 4 | 3-way mode switch | [DIP Switches](#DIP Switches) | | 5 | Power connector | [Wiring Diagram](#Wiring Diagram) | | 6 | RS485 Bus connector | [Wiring Diagram](#Wiring Diagram) | | 7 | Antenna connector | | | 8 | N/A | | | 9 | N/A | |

| 10 | Clip for DIN-rail mounting | | | 11 | Backplane connector (not in use) | |

Specifications

Physical Specifications
Dimensions (W x H x D)	36 x 93 x 59 mm
Weight	87 g
Ingress protection class	IP20
Antenna	External

Bus Specifications
Maximum number of devices on bus (Node)	1
Maximum number of devices on bus (Gateway)	1
End-Of-Line Terminal Resistor	YES, 120Ω

Electrical Specifications
Input voltage (AC)	24VAC ±10%
Input voltage (DC)	12–24VDC ±10%
Maximum power consumption	2.5W
Average power consumption	0.5W
Conductor cross section (stranded)	0.2–1.5mm²
Conductor cross section (solid)	0.2–1.5mm²
AWG	24–16
24V throughput power	N/A
Maximum RF output power	100 mW
Frequency range	2402–2480 MHz

Environmental Conditions
Ambient operating temperature	-20°C to +55°C / -4°F to 131°F
Ambient storage temperature	-30°C to +80°C / -22°F to 176°F
Relative humidity	10–95% non-condensing

DIN Rail Accessories

This section describes the accessories available for the DIN rail form factor of W-Modbus products. It also provides information on how to use these accessories effectively in various applications.

Available Accessories

The following accessories are available for the DIN rail:

Item	SKU
1.8 dBi Outdoor White N-Type Male Antenna Kit	800-2325
3.5 dBi Outdoor White N-Type Male Antenna	104-1040
6 dBi Long-Range Directional Antenna	104-1004
5 dBi Puck Antenna (IP65)	104-1033
2 dBi Omni Antenna	104-1002
Super Low Loss cable (1 meter)	800-9101
DIN rail outdoor kit	800-2324
DIN rail power supply	103-1046
DIN rail IP67 enclosure	800-2322
Outer shell	800-2323

DIN Outdoor Kit

SKU: 800-2324

For installation outdoors, the product must be placed in a correctly rated enclosure.

LumenRadio offers an outdoor kit for the DIN rail form factor that is IP67 rated (similar to NEMA 4) for use with outdoor installations.

The kit includes

1x IP67-rated plastic enclosure
1x 24 VDC power supply
1x N-Type antenna connector
1x 2 dBi outdoor antenna
1x vandal cover made of sheet metal

Using the contents of this kit is the recommended way to install W-Modbus outdoors.

If you prefer to source 24 VAC power from your electrical cabinet and do not require a vandal cover, you can purchase the enclosure and antenna separately:

IP67 DIN rail enclosure with N-Type female connector
2 dBi outdoor antenna with N-Type male connector

Antennas

The DIN Rail product features an RP-SMA connector, allowing the use of alternative antennas. Any RP-SMA compatible antenna can be used, provided it has 50 Ohm impedance and a resonance frequency of 2400–2483.5 MHz.

{{#note}}Note (E.U. Market): CE marking of the W-Modbus product is only valid with the default antenna. If the original antenna is replaced, it is the user's responsibility to ensure CE compliance below 20 dBm. {{/note}}

{{#note}}Note (U.S. Market): FCC certification for the W-Modbus DIN Rail allows up to 27 dBm output power, enabling the use of higher-gain replacement antennas. {{/note}}

1.8 dBi Outdoor White N-Type Male Antenna Kit

SKU: 800-2325

A compact external antenna designed for reliable indoor or outdoor installation. Mounts on the exterior of devices or electrical cabinets by replacing the stock antenna, providing extended range and improved connectivity.

800-2325 is a kit including the 1.8 dBi Outdoor White N-Type Male Antenna, 1000mm antenna cable, and the RP-SMA male to N-Type female connector.

3.5 dBi Outdoor White N-Type Male Antenna

SKU: 104-1040

A small omnidirectional antenna with an upright form factor. Connects via the RP-SMA connector and provides reliable wireless coverage in all directions.

An antenna cable, for example 102-2012, is required.

3.5 dBi Outdoor White N-Type Male Antenna

6 dBi Long-Range Directional Antenna

SKU: 104-1004

A high-gain outdoor directional antenna ideal for extended coverage requirements. This antenna is highly directional in the horizontal plane — precise alignment is critical for optimal performance.

Component	SKU	Description
RP-SMA to N-Type Female Connector	102-2011	Adapter for antenna connection
Antenna Cable (N-Male to N-Male), 1 m	800-9101	Cable length option
Antenna Cable (N-Male to N-Male), 3 m	800-9102	Cable length option
Antenna Cable (N-Male to N-Male), 5 m	800-9103	Cable length option

5 dBi Puck Antenna (IP65)

SKU: 104-1033

An external puck antenna offering a simpler outdoor installation alternative. The antenna cable is sensitive — avoid excessive bending or looping to maintain optimal wireless range.

{{#note}}This option carries a higher risk of incorrect antenna placement. See the radio planning section for guidance.{{/note}}

2 dBi Omni Antenna

SKU: 104-1002

The same antenna included in the outdoor kit. Requires the RP-SMA to N-Type Female Connector (SKU: 800-2322) to connect to the DIN Rail device.

LED Status Indicators

The LEDs will display different patterns depending on the current state of the device. This section describes the possible patterns and their meanings.

LED patterns shown in response to a button command are not included here; refer to [Button Functionality](#Button Functionality).

The LEDs will turn off after 30 minutes. They can be set to always on; refer to [Button Functionality](#Button Functionality).

{{#note}}If there is an error status on the RS485 LED, the LEDs will not turn off and will remain on until the error is resolved.{{/note}}

LED Overview

Mesh Commissioning

Gateway Commissioning

Mesh Commissioning - Network Found

Device Restarting

Gateway Secure Mode, RS485 device found

Gateway Secure Mode, RS485 device not found

Network strength good, RS485 device found

Network strength good, RS485 device not found

Network strength good, scanning RS485 devices

Network strength ok, RS485 device found

Network strength ok, RS485 device not found

Network strength ok, scanning RS485 devices

Network strength poor, RS485 device found

Network strength poor, RS485 device not found

Network strength poor, scanning RS485 devices

Firmware error, contact support

Identify device

Hold 5s: Toggle LEDs always on/ off

Hold 10s: Uncommission

Hold 15s: Blink FW version

Hold 20s: Firmware Update Mode

Button Functionality

There are four ways to interact with the device using the button:

Single press
Double press
Triple press
Hold and release

Single Press

If LEDs are not already permanently on (see Held button behavior below), this action extends the time during which the LEDs will stay active by 30 minutes.

Double Press

Rescans Modbus devices

The third LED from the top will start to blink faster when scanning is running, refer to [LED Status Indicators](#LED Status Indicators).

Triple Press

Makes the device connectable by the mobile app for 3 minutes. The middle LED will flash blue two times to confirm. See [Mobile App](#Mobile App) section.

Held button behavior

Some actions are performed by holding the button and releasing when a specified color is seen on the middle LED. Refer to the animation and the list below.

Hold for 5s to turn LEDs to always on, release when magenta is shown
Hold for 10s to uncommission, release when blue is shown.
Hold for 15s to [show firmware version](#Checking Current Version) on the LEDs. Release when cyan is shown.
Hold for 20s to enter [Firmware Update mode](#Update Procedures), release when red is shown.

Dip Switches

Setting	1	2	3	4	5
9600 baud	OFF	OFF	-	-	-
19200 baud	OFF	ON	-	-	-
38400 baud	ON	OFF	-	-	-
76800 baud	ON	ON	-	-	-
No parity	-	-	OFF	-	-
Even parity	-	-	ON	-	-
1 stop bit	-	-	-	OFF	-
2 stop bit	-	-	-	ON	-
Node only: use [local serial configuration](#Config Distribution)	-	-	-	-	ON
Node only: use [gateway serial configuration](#Config Distribution)	-	-	-	-	OFF

Dip Switches

Three-Pole-Switch

The three-pole-switch can be used to set the device in one of three different modes.

Position	Mode
Gateway	Secure gateway
COMM.	Gateway Commissioning
NODE	Node

Mobile App

W-Modbus

Features

Updating W-Modbus firmware
Network diagnosis
Showing W-Modbus device information

Requirements

Your mobile device has Bluetooth enabled.
The target device is powered on and within Bluetooth range.
Your mobile device has an internet connection so that the latest firmware can be automatically downloaded.

{{#warning}} During the time the app is connected to the W-Modbus device, the device will have 33% lower bandwidth available for network traffic. {{/warning}}

Device Connection

Switch the W-Modbus device into Bluetooth mode by triple-pressing the button. When the device successfully enters Bluetooth mode, the middle LED will flash blue. The device will remain in Bluetooth mode for a period of 3 minutes.

Launch the W-Modbus Application

Open the application on your mobile device. The app will automatically scan for a device. {{#note}}The W-Modbus app only finds W-Modbus devices. Ensure you are using the correct app, as the W-Modbus and W-BACnet apps are separate applications.{{/note}}

When a device is found, the Available Devices screen is shown.

Here you can select the device you wish to connect to. You can also press Identify to confirm the correct device, which will blink all LEDs white as confirmation.

If no device is found, repeat step 1 and follow the instructions on the app to repeat the scan.

Firmware update in app

Start update

If there is a firmware update available for the connected device, the application will provide an onscreen option to start the update. The app will display the progress in real time.

Complete update

If an update was performed on a gateway device the update will automatically propagate to all nodes in the network. Typically this propagation takes 30 minutes to 2 hours, but can take longer depending on the size of the network.

Switching Update Channel

If updating to beta firmware, you need to switch the update channel. When the app is starting, tap the LumenRadio logo 8 times and select Beta mode.

Beta Mode will be shown in red in the top right corner.

Commissioning

The commissioning process allows you to add W-Modbus nodes to a gateway's network using the mobile app. Follow the steps below to commission your devices.

The gateway should be in secure mode before commissioning devices to it using the mobile app. Put the gateway in secure mode using the three-pole-switch.

Step 1

Ensure that the device is powered on, within range and is in bluetooth mode. To activate bluetooth mode push the button on the device three times.

Step 2

After successful connection, all advertising bluetooth devices are shown. Tap the Commission button to commence commissioning.

Step 3

This screen only shows gateways in bluetooth advertising mode. Therefore, ensure that the desired gateway is powered on, within range and is in bluetooth mode by pressing its button three times. Tap Select on the desired gateway to proceed.

Step 4

On this screen it is recommended the gateway be given a meaningful name if necessary. When you are ready, tap Continue.

Step 5

On this screen, devices in bluetooth mode that are within range are listed. Devices can be filtered based on their name or device ID. When the desired device has been located, tap Add to add the device to the currently selected gateway.

Step 6

A progress indicator will be shown while the device is added to the network. After the device is added it will no longer be in bluetooth mode and will therefore not show in this list unless its button is pressed three times.

Saved Gateways

Gateways that have been previously connected are automatically saved so you don’t need to establish a new gateway connection each time you commission additional devices. If needed, saved gateways can be removed from the list of available gateways shown in Step 3.

Removing Commissioned Devices

To remove a commissioned device from a gateway’s network, follow Steps 1–5. When you reach Step 5, place the device into Bluetooth commissioning mode. It will appear in the list of advertising devices (use the search function if needed) with an available Remove option. Once removed, the device will automatically decommission itself from the current network and return to Bluetooth advertising mode.

Nodes can also be decommissioned using the push button on the device.

Network Map

The network map provides a visual representation of all W-Modbus devices connected to a gateway. This feature enables the viewing of device connections to assist with understanding their relationships within the network.

Network Map Overview

The network map is presented as a hierarchical tree structure where parent devices appear at the top level with child devices indented beneath them to illustrate a direct connection. Sibling devices — those sharing the same parent — are displayed at the same indentation level. An example of a network map is displayed below.

In the picture above, the gateway is titled "BGW6" and has 27 mesh nodes as children. The children are named "WBN-ED52", "WBN-A842" and so on. Both WBN-ED52 and WBN-A842 are directly connected to the gateway, making them siblings in the network map. WBN-A842 has one mesh node as a child.

PDR

The hexagon to the immediate left of a node's name displays a number which indicates the packet delivery rate (PDR) from the gateway to that node.

In the picture above, WBN-ED52 has a PDR of 95% while WBN-A842 has a PDR of 91%.

The color of the hexagon is determined by the PDR, with green indicating a strong connection (PDR >= 99%), amber indicating a moderate connection (PDR >= 94% and < 99%), and red indicating a weak connection (PDR < 94%).

RS485 Status and Address

The RS485 hexagon at the bottom right of the node indicates that the node has a connected device on the local bus. In the picture, all the nodes have a connected device as indicated by the green RS485 hexagon. The hexagon's color will be red for a node with no connected device. The ID displayed at the bottom left of the node is the Modbus address of the devices connected on the local bus. In the picture, the gateway has a device with address 91, while the node WBN-ED52 has two local devices connected, with address 72 and 97.

{{#note}} For W-Modbus, the gateway will not have an RS485 hexagon as the gateway acts as the Modbus client and does not have a server address. {{/note}}

Identify and rename buttons

The buttons to the right of the device name are used for renaming the device and identifying.

The Identify button will cause the device to blink all LEDs white as confirmation. When you have identified the device, press the button to make the blinking stop.
The Rename button will rename a node. See below for more details on renaming devices.

Missing PDR values

In this picture, some of the nodes ("WBN-CD37", "WBN-D493" and "WBN-ED52") have yet to calculate a PDR and send to the gateway. One node has firmware older than 3.0.0, which only displays limited information in the network map.

Renaming a Gateway/Node

Follow these steps to rename a node within the network map:

Connect to a gateway

Connect to the app and open the network map as described above.

Tap on (rename icon) to open the rename dialog.

Enter a new name

The name must match the following criteria:

The name must be in ASCII characters only.
The maximum length of the name is 8 characters.

Confirm or cancel

Tap the checkmark to save the new name.
Tap the red (X) to cancel the renaming process.

PDF Report Generation

The application allows for the generation of PDF reports of the network map.

Requirements

Before generating a PDF report, ensure:

The mobile device has sufficient storage to save the generated report.
Optionally, a compatible PDF viewer is installed for viewing reports after generation.

Report Generation Process

Connect to the app and open the network map as described above.

Select the Generate PDF report option.

Customize Report Content: The report's content can be customized by adding optional details such as the company and installer name.

The report will include a timestamp of when the report was generated.

Generate & Save the Report

Tap Generate PDF Report to create the PDF document.
The application will compile the network map and relevant data into a structured report.
Save the file to your mobile device or share it.

Mobile App Troubleshooting

If firmware update via the app fails or an error occurs:

Ensure the device is within range and connected.
If issues persist, restart the app and target W-Modbus device and try again.

Range Test Mode

Starting with firmware version 4.2.1, there is a range test mode that can be enabled on W-Modbus devices using the mobile app. This mode allows you to test the wireless range and signal strength of your W-Modbus devices.

This test is intended to validate the range of a specific point-to-point connection. It can also be used to validate range for a full mesh system. Note that all application traffic (BACnet or Modbus) will be blocked during the test.

Activating Range Test Mode

In order for the range test to work, you need to commission the network first. Connect to the gateway using the mobile app, press the Range Test icon in the top right corner, and enable the toggle switch. This will put the gateway in range test mode.

Then connect to the node you intend to test with the mobile app and activate range test on the node.

The devices will restart, and the node will flash yellow on the first LED (left / top) until it has rejoined the network. A white LED on the third LED on the gateway will indicate that the gateway is in range test mode.

Once connection is established, the first LED will indicate the Packet Delivery Ratio (PDR) as in a normal network (green, yellow, red) and the third LED will indicate latency (green, yellow, red). The middle LED will indicate when a test packet is being sent.

Interpreting the results

A green PDR LED and a green latency LED indicate a good connection.
A yellow PDR LED and/or a yellow latency LED indicates a fair connection that may be sufficient for a production environment, but could potentially cause issues in more demanding applications.
A red PDR LED and/or a red latency LED indicate a weak connection.

Restoring from Range Test Mode

Activate Bluetooth on the test devices and deactivate range test. Do not forget that the gateway also needs to be restored.

Radio planning

This section provides guidelines for planning the radio communication aspects of a W-Modbus network. It covers topics such as wireless design considerations, installation and placement of wireless devices and external antennas, and factors to consider for larger projects.

Wireless design considerations

W-Modbus is designed to be simple to use without the need for extensive planning. However, it is still recommended to consider the placement of your gateway and node units before installation. It is also a good idea to bring an additional W-Modbus device to use as a repeater, in case any nodes experience communication issues in the network.

{{#warning}} In many cases wired W-Modbus devices are placed in metal enclosures. This will effectively block the wireless signal. In these cases, an external antenna should be used and placed on the outside of the metal enclosure.

{{#note}}Note that only the DIN Rail supports external antennas, and it is not recommended to use a Compact or Wall Mount product inside a metal enclosure.{{/note}}

Installation and Placement of Wireless Devices and External Antennas

A consistent, high-quality wireless network is essential for maintaining a stable Modbus system. Follow the guidelines below to optimize performance.

Clearance: Maintain at least 3/4 of an inch of unobstructed space around the antenna — avoid contact with cables or other objects that could disrupt the radiation pattern and reduce range.
Height: Install devices or external antennas at least 1.5 m (5 ft) above floor level.

Install devices at least 1.5m above floor level

Cable and connector handling: Ensure all connectors and cables are properly secured. Antenna cables are sensitive; avoid excessive bending or tight loops both during installation and in final placement.
Metal Interference: Do not install inside a metal enclosure or where the device is surrounded by metal objects.
Moisture & Snow: Water significantly attenuates wireless signals. For outdoor installations, use antennas that cannot be covered by snow buildup — see Outdoor Antenna Guidelines for details.

Refer to the Antennas section for more information regarding external antennas.

For larger projects it is worth considering a couple of factors.

If you have more than 25 Modbus devices that require a fast response rate, consider splitting the network into two or more networks. You can follow this set-up guide for each network.
If you have longer distances outdoors or many walls or floors to penetrate, you need to estimate the range. For this purpose, our wireless range calculator can be used.

Installation Guidelines

Example Installations

When installing larger W-Modbus networks, physical network planning is important. Try to avoid bottleneck nodes and consider placing repeaters if the signal seems to travel a long distance or through difficult obstacles.

Bad installation without alternate mesh pathways

❌ A bad installation does not have alternate mesh pathways

Good installation with multiple mesh pathways

✅ A good installation has good node density to allow for multiple mesh pathways

Electrical Cabinets

DIN Rail devices are designed for mounting inside electrical cabinets, with an external antenna placed OUTSIDE the enclosure using an antenna extension cable to ensure optimal wireless performance. Using the standard antenna inside a metal enclosure will significantly reduce the wireless range and is not recommended.

Indoor Installations

For indoor installations, any of the available form factors may be used. Refer to the Wireless design considerations and Radiation pattern sections to determine which product best fits your specific application and performance requirements.

Outdoor Installations

Place your device inside a suitably rated IP enclosure to protect it from dust, moisture, and other environmental conditions. If you are using a metal enclosure, ensure that the antenna is mounted outside the casing to prevent signal loss caused by metal shielding. In such metal-case installations, a DIN rail version of the device should be used to ensure proper mounting, grounding, and overall system reliability.

Refer to the Wireless design considerations and Radiation pattern sections to determine which product best fits your specific application and performance requirements.

Solar Installations

{{#warning}} The Gateway should always be installed at the inverter, while the Node is connected at the smart meter. {{/warning}}

If needed, additional nodes can be placed between the Gateway and the Node to act as repeaters, boosting signal strength and improving overall wireless network performance.

Solar installation overview showing Gateway at inverter and Node at smart meter

The gateway should be put in solar mode to optimize the wireless performance in this type of installation.

Radiation pattern

Compact

Wall mount

DIN rail

DIN rail accessories

1.8 dBi Outdoor White N-Type Male Antenna Radiation Pattern — 1.8 dBi Outdoor White N-Type Male Antenna (SKU: 800-2325)

Puck Antenna Radiation Pattern — 5 dBi Puck Antenna (SKU: 104-1033)

2dBi Outdoor Antenna Radiation Pattern — 2 dBi Omni Antenna (SKU: 104-1002)

6dBi Outdoor Antenna Radiation Pattern — 6 dBi Long-Range Directional Antenna (SKU: 104-1004)

Antenna alignment

The alignment of the antennas is important to get the best possible performance. Please see the following instruction video:

Rough antenna range estimates (outdoor line of sight)*

Note the images indication the antenna alignment. Refer to radio planning for more information on antenna placement and orientation.

Antenna Type	Estimated Range
DIN rail in metal enclosure	-- 50ft/15m --
Outdoor Kit	------------ 1500ft/450m ------------
2 dBi Omni + Cable (kit)	------------ 1500ft/450m ------------
6 dBi Directional + Cable (kit)	---------------- 2000ft/600m ----------------
Puck Antenna	------ 350ft/100m ------
Range depend on conditions. Range indicated in the table is outdoors clear line of sight without obstacle.*

Gateway & Node selection

Gateway Selection

Choose either a DIN rail or a Wall mount W-Modbus device to be the Gateway for your wireless network. You should have only one Gateway per network. The Modbus client that is responsible for polling different values from different sensors and controllers, is always connected at the W-Modbus Gateway.

Node selection

Any W-Modbus device — Compact, DIN Rail, DIN Rail Pro, Wall Mount, or Wall Mount Pro — can serve as a node in the network. Nodes without a Modbus device connected function as repeaters, helping to extend radio coverage and improve overall wireless network health.

Setup Guide

This section provides a step-by-step guide for setting up a W-Modbus network. It covers the initial configuration of W-Modbus devices, connecting to Modbus Clients and Servers, and troubleshooting common issues during the setup process.

Pre-installation Requirements

Prerequisites

Ensure power is disconnected before installation
Verify Modbus network requirements. Refer to [Application Guide](#Application Guide).
Check environmental conditions. Refer to [Wireless design considerations](#Wireless design considerations).

Safety Considerations

Always disconnect power before installation
Follow local electrical codes
Use appropriate PPE during installation

Cabling requirements

RS485 networks use shielded, twisted-pair cable with impedance between 100 and 130 ohms. Foil or braided shielding is acceptable.

The DIN rail has a built-in 120Ω EOL (End-of-Line) resistor, which can not be disabled.

DIN rail Specific Requirements

Use standard 35mm DIN rail
Ensure proper rail mounting
Allow space for cable management

POWER AND RS485 CIRCUIT CAUTION

The other device(s) are half-wave rectified.
All power connections must have the same polarity. The ”+” terminal of W-Modbus must not be connected to the ”–” terminal of another device. {{/warning}}

Physical Setup

1. Confirm that the W-Modbus unit has no visible damage.

2. Mount the unit

The DIN rail has a clip-on mounting. Place it onto the DIN rail.

2B. (OPTIONAL). Install an external antenna.

See [Antenna Installation Instructions](#Antenna installation instructions)

3. Connect the power supply and the Modbus device to the W-Modbus unit

4. Ensure that the W-Modbus unit and its wiring are securely mounted, and that the LEDs turn on.

6. Set the baud rate on the Gateway

W-Modbus end-user products ship by default with baud rate 9600, no parity and 1 stop bit. This can be changed using the dip switches on the product.

The Compact will always get the baud rate from the gateway.

In other words, the system is baud rate independent as long as you use Wall mounts and DIN rails as nodes in your system. You can mix baud rates in the system if you desire.

Physical commissioning installation video guide

Physical Commissioning Method (Step‑by‑Step)

Before proceeding, complete the [Physical Setup](#Physical Setup) steps.

1. Set up the gateway in the system for commissioning

Use the dip switches on the Wall mount or Din Rail unit you wish to use as the gateway to set it to Gateway Commissioning Mode.
Allow all the commissioning mesh nodes join this commissioning Gateway.

2. Install the nodes

All devices are shipped in mesh‑commissioning mode and are ready to join a new network.
Nodes that are prepared for commissioning display a sweeping blue LED pattern.
In case the device isn't in commissioning mode (i.e., you do not see the sweeping blue LEDs), press the button for 10 seconds.
The center LED will turn blue, indicating the device has been uncommissioned; it will then show the sweeping blue LED sequence and be ready to join a new network.
Place the gateway (GW) into commissioning mode and wait for the nodes to receive the secure network credentials required for permanent installations.
Once a node successfully receives these credentials, all its LEDs will blink green.
After this, the system is ready to transition to secure network mode.
When the gateway is switched to secure mode, each node will blink yellow on all LEDs and then reboot to rejoin the gateway under secure operation.

3. At the gateway, switch the network to Secure Mode

Once you have made sure all your nodes are in the network you can validate in your W-Modbus controller that you see all your W-Modbus devices.
If you are missing any then you can validate the installation in the mobile app.
Once all W-Modbus devices are available for you in the W-Modbus controller then flip the 3 state dip switch to secure mode.
The network will now reboot.
The network will reform, which will take up to 15 min.
Wait at least 5 minutes before checking the mobile app to see the network reforming progress.
If, after following the steps, all devices are not appearing in the network, see troubleshooting guide.

Mounting instructions

The DIN rail has a clip-on mounting. Place it onto the DIN rail.

Mobile App Commissioning Installation Guide

Mobile App Commissioning Method (Step‑by‑Step)

Before proceeding, complete the [Physical Setup](#Physical Setup) steps.

1. Set up the gateway for your system in secure mode

Use the dip switches on the Wall mount or Din Rail unit you wish to use as the gateway to set it to Gateway Secure Mode.

2. Select the Gateway to join

Download the latest version of the W-Modbus app.
Put the gateway device into BLE advertising mode by pressing the button 3 times.
Open the app and tap the Commission button — all available gateways will be listed.
Use the Identify button to confirm the correct gateway device which gives confirmation by blinking all LEDs white.
Select your gateway and rename it to something meaningful that references the installation site.
The app will display a list of mesh nodes available to join the selected gateway's network.
To exit the commissioning process at any time, press the End Commission button in the bottom of the screen.

3. Nodes identification

All devices are shipped in mesh commissioning mode and will display a sweeping blue LED pattern, indicating they are ready to join a new network.
If a device is not in commissioning mode (i.e., no sweeping blue LEDs), press and hold the button for 10 seconds until the center LED turns blue, then release. The device has now been uncommissioned and will display the sweeping blue LED pattern, ready to join a new network.
In the W-Modbus app commissioning screen, use the Identify button in the app to confirm the correct node — the device will blink all LEDs white as confirmation.

4. Sect the Nodes to add to the Gateway

In the W-Modbus app commissioning screen, tap the Add button to add the node to the gateway selected in the previous step.
Once added, the device tile disappears from the commissioning screen.
The node will reboot and the top LED will flash yellow, then change to a solid color indicating connection strength to its parent: red (weak), yellow (moderate), or green (strong).
Ideally, all nodes should show a solid green or yellow top LED. If you see red, consider adding repeaters, using external antennas, or repositioning the device to improve signal strength.
Repeat this process for all nodes intended for this gateway.
To exit the commissioning process at any time, press the End Commission button at the bottom of the screen.

5. Verify your installation

Put the gateway device into BLE advertising mode by pressing the button 3 times.
Open the app and connect to the correct gateway from the list of available devices.
The device home screen will display the total number of wireless devices in the network — verify that this matches your expected count.
Tap the Network map button to view all connected mesh devices and their Modbus devices connected on the RS‑485 port.

Wiring

Wiring Diagram

The DIN rail has a built-in 120Ω EOL (End-of-Line) resistor, which can not be disabled.

Swap antenna

{{#warning}} The antenna connector does not have any ESD protection. Make sure to not touch the antenna connector before you have installed the antenna. {{/warning}}

Identify the external antenna port on your device and remove the stock antenna by turning it counter-clockwise.
Align the antenna cable connector with the device's antenna port. Gently push and twist the connector clockwise until it is securely fastened. {{#warning}}

Avoid bending or twisting the antenna cable, as this can damage the internal wiring and degrade performance. {{/warning}}

Verify signal strength after installation and adjust antenna placement as needed.

Application Guide

This section includes guidelines for selecting the appropriate W-Modbus product for specific applications and use cases. It also provides information on how to optimize the performance of W-Modbus devices in various environments and scenarios.

Best practice settings

These are best practice settings for Modbus RTU communication when using W-Modbus products.

Minimum 1 second time-out on replies.
Minimum 3 retries per request
(PDR) above 95 % on all nodes. See [Mobile App](#Mobile App) section.
If your device is fast-polling, see section Solar applications
See Solar Installations guide on how to wire LumenRadio devices with solar inverters.

A consistent, high-quality wireless network is key for a stable Modbus RTU network. Refer to [Wireless design considerations](#Wireless design considerations) for more information.

Response latency

In a Modbus system, it is important to be able to ask questions and receive answers within a certain time frame. When a Modbus Client asks a question, there is often a pre-configured waiting time ("timeout"). In many Modbus systems, this is configurable. W-Modbus often has a delay of 50-80 ms but responses can take up to 500 ms depending on the amount of data, the baud rate of the device and if repeaters are used.

Server Scanning

W-Modbus nodes start scanning Modbus addresses by polling on the current baudrate, parity and stop bit from address 1 up to 255. This is done by requesting holding registry 0 from a specific address. Scanning has a 300 ms timeout, meaning each device has 300ms to respond.

Thus, if your device has address number 255 it will take 1 min and 17 seconds for the W-Modbus node to find it. The third LED blinks faster when scanning is running. Refer to [LED Status Indicators](#LED Status Indicators). Once a device is found, the third LED (RS485) will go from red to green.

The scan can be restarted using the button, see [Button Functionality](#Button Functionality).

Solar applications

It has been found that some solar inverters have set their response wait time to 100 ms or less, which means the system does not have time to respond before the next question is asked.

For solar inverters with a very fast poll rate, LumenRadio offers a Solar Mode which can be used to improve compatibility. Solar Mode is a special mode of operation for W-Modbus products that is designed to work with solar inverters that have a very fast poll rate.

How to switch to Solar mode

Solar mode can be enabled from the W-Modbus app.

{{#warning}} The FW version should be >= 4.2.0 and you need to update to the latest version of the app to use Solar mode. {{/warning}}

Connect to the gateway of your wireless Modbus network using the W‑Modbus app. Once connected, toggle the Solar Mode switch from the app's home screen. The gateway will then restart, and all nodes will need to rejoin the network, resulting in a brief temporary downtime.

Step 1

Step 2

Step 3

Step 4

Compatibility Notice

Using W-Modbus Solar mode, there have been good results with many inverter & smart meter pairs that have a very fast poll rate. However, LumenRadio can not guarantee functionality due to rapid firmware updates from Solar inverter companies.

It is therefore recommended, if possible, to disable automatic updates on the inverter and smart meter, and update their firmware only if needed. There have been cases where inverter and smart meter firmware updates increase polling rate further, breaking compatibility.

We maintain a list of tested inverter and smart meter combinations, please see the Solar Inverter and Smart Meter Compatibility List section below for more information.

If you do decide to test with other combinations than the ones found on our compatibility list or find current working systems no longer working, please raise a support ticket.

Solar Inverter and Smart Meter Compatibility List

LumenRadio maintains a list of tested solar inverter and smart meter combinations that have been found to work with W-Modbus Solar mode. This list is updated as we test new combinations.

Inverter brand	Inverter	Smart meter	Comment
Fronius	Symo GEN24 10.0 Plus	Fronius Smart Meter 63A-3	Works with all versions of LumenRadio firmware
Growatt	MOD 3-10KTL3-XH	CHINT TPM-C (DTSU666)	Works as of LumenRadio firmware 2.2.3+
Growatt	MOD10KTL3-XH (BP)	CHINT DTSU666-20	Works with Solar Mode
Huawei	SUN2000-10KTL	CHINT DTSU666-H	Works with Solar Mode
Huawei	SUN2000-10KTL-M1	CHINT DTSU666-H	Works with Solar Mode
Kostal	PLENTICORE BI10.0/26 G2	Smart Energy Meter G2	Works with Solar Mode
SAJ	H2-10K-T2	CHINT DTSU666	SAJ have adapted firmware in Sweden to support LumenRadio
Sigenergy	SigenStor EC 10.0 kW TP	Sigen Sensor TP-CT120-DH (Eastron SDM630MODBUS)	Works with Solar Mode
Solinteg	MHT-50K-100	Solinteg RMM-MA	Works with Solar Mode
Solis	S6-EH3P15K-H	Eastron SDM630MODBUS	Works with Solar Mode
Sungrow	SG5.0/6.0/7.0/8.0/10/12RT	CHINT DTSU666-20	Works with Solar Mode
Sungrow	SH15T	CHINT DTSU666	Works with Solar Mode
Sungrow	SH6.ORT-V112	CHINT DTSU666-20	Works with Solar Mode

There are some inverter and smart meter pairs where issues have been reported which we have not yet tested with Solar Mode:

Inverter brand	Inverter	Smart meter	Comment
SolaX	X3-Hybrid G4.2	CHINT DTSU666	Not tested with Solar Mode yet. Please contact LumenRadio if you have tested beta version with SolaX.
Fox ESS	H3	CHINT DTSU666	Not tested with Solar Mode yet. Please contact LumenRadio if you have tested beta version with Fox ESS.

Troubleshooting / FAQ

This section contains common troubleshooting steps and frequently asked questions.

Physical

None of the LEDs are blinking when powered on.

Check if the supply voltage is within the specification. The voltage should be 12-24V DC or 24VAC and at least 0.5A current input.
If the supplied input voltage is DC, check that the polarity is connected correctly.
Check if the unit is in bootloader mode. Open nRF Connect app and check if the device shows up under 'scanner' tab with 'DFU' filter. If device shows up, follow the steps in Update Procedures. If not, try power cycling the unit and check again.
If the issue persists, contact your distributor and raise a support ticket.

No RS-485 device detected

Red status LED or no status LED indicates that no RS-485 device is detected. Check the following:

Verify polarity of RS485 connectors.
Check RS485 bus settings (baud rate, parity, stop bits)
Ensure the Modbus master is connected to the W-Modbus Gateway, and that the slaves are connected to the W-Modbus nodes. The Modbus master is responsible for polling different values from different sensors and controllers, and it is always connected at the W-Modbus Gateway.
If this is a solar installation, ensure the inverter is installed at the Gateway and the smart meter is installed at the Node. The gateway should be put in solar mode to optimize the wireless performance in this type of installation.
Verify that the Modbus device is working as expected

Can the end-of-line terminal resistor be disabled?

No, it can not be disabled. The typical usage of the product is that the product is end of line.

Wireless

Nodes are not connecting to gateway

Check if the nodes are in commissioning mode. If not, put them in commissioning mode and try again.
Check if the gateway is in commissioning mode. If not, put it in commissioning mode and try again.
Check if the gateway or nodes are in range test mode. If so, exit range test mode and try again.
Check if the nodes are within range of the gateway. If not, move them closer to the gateway and try again. See radio planning for more information on range and placement of the gateway and nodes.

When I put the gateway back into commissioning mode, some nodes stay in secure mode.

This is because the nodes didn't find the gateway in time for the gateway to tell them to switch back into commissioning mode.
Put the gateway back into secure mode for 10 minutes, to allow for all the nodes to join the GW.
Then switch the GW back to commissioning mode.
Alternatively, each node can be manually put back into commissioning mode, refer to button functionality section for instructions on how to do this.

Modbus Specific

Where should the node and the GW be connected in case of solar installations?

Solar Installations

Firmware Updates

This section describes the firmware update process for W-Modbus devices.

The latest firmware version for W-Modbus devices is 4.2.1.

Starting with firmware version 3.0.0, it is enough to update the gateway to the latest firmware version, and the gateway will take care of updating all nodes in the network using Firmware-Over-The-Air (FOTA).

{{#note}}On firmware 3.0.0 and above, the gateway will override your firmware update if you update only at the nodes, so it is recommended to update the gateway first. If you have updated the nodes before updating the gateway, simply update the gateway and the FOTA process will take care of the rest.{{/note}}

Checking Current Version

Via Mobile app

[See Mobile App section](#Mobile App)

Via LED lights

When the button is held for 15 seconds and then released as described in [Button Functionality](#Button Functionality), the LEDs will show the current firmware version.

The version number is split into Major.Minor.Patch. As an example, firmware version 3.3.2 has the Major version 3, Minor version 3 and Patch version 2.

The version is shown on the LEDs by blinking the topmost LED in yellow one time for each increment of the Major version, the second LED one time for each increment of the Minor version and the third LED one time for each increment of the Patch version.

For 3.3.2, the top LED will blink 3 times, the second LED will blink 3 times and the bottom LED will blink 2 times.

Update Procedures

via Mobile app

[See Mobile App section](#Mobile App)

nRF Connect

{{#warning}} Updating via the Mobile App is recommended, nRF Connect should only be used as a fallback if you are updating devices that have a firmware below 3.1.1, where the mobile app is not supported. {{/warning}}

This method of updating the LumenRadio firmware requires you to first download the latest firmware from LumenRadio’s website. If you are updating your devices from version 2.2.3 or below to version 3.0.0 or above, you will need to repeat this step for all devices in the network. If you are updating from version 3.0.0 or above to the latest version, you will only need to do this step once at the gateway.

Video Guide

iOS

Download and store the new firmware to your phone. Save it in any location.
Download the app nRF Connect for Mobile from App Store.
Open the mobile app and activate Bluetooth on the phone.
On the LumenRadio device: Enter bootloader mode for the unit by pressing and holding down the push button for 20 seconds. When the mid LED turns red then release the button.
In the nRF Connect app: Scan and connect to the unit. Press Scan in the top left corner of the app, and press Connect on the W-Modbus-DFU or W-Xbus-DFU or DFU-W-Xbus-1XYZ unit in the list. If the device does not show up in the list of found devices, redo step 3 and make sure you are not using any filters.
Select firmware to upload: Press the DFU symbol in the top right corner of the app. Press Open Document Picker and then select the firmware you downloaded to your phone in step 1. Note that in the example below we use the W-Modbus software. The procedure looks the same for W-BACnet but the file name is W-BACnet-version.zip.
Wait for transfer to complete
Wait until the transfer is 100% and you get the status Application has been sent successfully from the app. Press Disconnect in the top right corner and wait for the unit to restart. The update is now complete!

Android

Download and store the new firmware to your phone. Save it in any location.
Download the app nRF Connect for Mobile from Google Play store.
Open the mobile app and activate Bluetooth on the phone.
On the LumenRadio device: Enter bootloader mode for the unit by pressing and holding down the push button for 20 seconds. When the mid LED turns red then release the button.
In the nRF Connect app: Scan and connect to the unit. Press Scan in the top left corner of the app, and press Connect on the W-Modbus-DFU or W-Xbus-DFU or DFU-W-Xbus-1XYZ unit in the list. If the device does not show up in the list of found devices, redo step 3 and make sure you are not using any filters.
Select firmware to upload: Press the DFU symbol in the top right corner of the app. Select the file type Distribution packet (zip), press OK and then select the firmware you downloaded to your phone in step 1. The file transfer will start when you press OK in the file browser.
Wait for transfer to complete: Wait until the transfer is 100% and you get the status Application has been sent successfully from the app. Press Disconnect in the top right corner and wait for the unit to restart. The update is now complete!

Release Notes 4.2.1

UNKNOWN

Known Issues

UNKNOWN

Warranty and Support

This section provides information about the warranty and support options available for W-Modbus products. It includes details on the warranty coverage, how to obtain support, and contact information for customer service.

Warranty Terms

The length of the warranty is a negotiation question between distributor and LumenRadio. Each distributor has a different term. The warranty term is typically between 1-5 years from day of shipment, but you will need to check with your distributor to find out what applies to you.

The warranty or service agreement will be deemed void if:

The product is repaired, modified, or changed, unless such repair, modification or change has been approved by LumenRadio AB; or
The serial number on the product has been made illegible or is missing.

Return and complaint policy

The customer is required to examine the goods as soon as possible upon receipt. If there is reason to believe that a product defect may result in damage, a written complaint must be made immediately. LumenRadio's liability shall pertain solely to defects that the customer asserts in writing within 15 days after the defect is discovered or should have been discovered, and no later than within the period stated in the agreement with LumenRadio from the invoice date.

When to Contact Support

If you have followed the steps in the troubleshooting guide and you're still seeing issues, feel free to contact our Customer Support.

Create a support request by clicking the "Create Support Ticket" att the bottom left of this page.

What to include in support request

In order to get help as fast as possible, please include as much information about your case as possible, including

The symptoms you are seeing
Pictures of the installation and wiring
A small video of the LEDs of the malfunctioning unit(s)
A network map from the [mobile app](#Mobile App)
The type of power supply you are using to power the W-Modbus unit (AC or DC)
The make and model of the Modbus devices you are using
Serial bus settings (baudrate, parity, stopbits )
Information about wireless conditions, distance between nodes and any obstructions.
If any external antenna is used.

Press the "Create Support Ticket" in the bottom of the navigation to create a support request.

{{#NOTE}}The more information you can provide, the faster we can help you.{{/NOTE}}

RMA claims

You can find the warranty terms for LumenRadio products in the Warranty and Support section. If you have a claim that you believe is covered by the warranty, please submit an RMA claim via our {{action:open-rma:support system}}.

The RMA ticket must contain the serial number of the products, a clear description of the observed fault, and details of how the device has been installed.

Regulatory Compliance

CE

This product complies with the Essential Requirements of RED (Radio Equipment Directive) of the European Union (2014/53/EU). This product meets the requirements of relevant conformance standards. A detailed Declaration of Conformity is available upon request from the manufacturer.

EU Declaration of Conformity

UKCA

This product complies with the relevant statutory requirements in the United Kingdom. This product meets the requirements of relevant conformance standards. A detailed Declaration of Conformity is available for market surveillance upon request from the manufacturer.

FCC

FCC IDENTIFIERS: XRSTIMOMWAN301, XRSTIMOMWAN201

FCC Information to User

This product does not contain any user serviceable components and is to be used with approved antennas only. Any product changes or modifications will invalidate all applicable regulatory certifications and approvals.

FCC Guidelines for Human Exposure

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

FCC Declaration of Conformity

We LumenRadio AB, Johan Willins gata 8, SE-416 64 Gothenburg, Sweden, declare under our sole responsibility that this product complies with Part 15 of FCC Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.

FCC Radio Frequency Interference Warnings & Instructions

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following methods:

Reorient or relocate the receiving antenna
Increase the separation between the equipment and the receiver
Connect the equipment into an electrical outlet on a circuit different from that which the radio receiver is connected
Consult the dealer or an experienced radio/TV technician for help.

Modifications made to the product, unless expressly approved by LumenRadio AB, could void the user's right to operate the equipment.

Industry Canada

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le resent appareil numerique nemet pas de bruits radiolectriques depassant les limites applicables aux appareils numeriques de la classe B prescrites dans le Reglement sur le broullage radioelectrique edicte par le ministere des Communications du Canada.

ISED Certification

MIC (Japan)

MIC Certification

KC (South Korea)

KC Certification

2.4GHz radio in other countries

China
India
Australia - Importer responsibility (ConserveIT)
South Africa - Importer responsibility (Name of partner)
Malaysia
Vietnam