ARJ45 port
For devices with an RJ45 RS485 port. Two-wire RS485 (A and B), plus ground and 12V.
| Pin | Signal |
|---|---|
| 3, 7 | GND |
| 5 | RS485 A |
| 6 | RS485 B |
| 8 | +12V |
| 1, 2, 4 | Not connected |
Connect compatible RS485 devices directly into the ROAMiQ ecosystem.
The ROAMiQ RS485 Chip allows compatible RS485-based components to communicate with the ROAMiQ Control Hub, bringing more third-party systems, sensors, controllers, and equipment into one unified control platform.
RS485 is commonly used in vehicle, marine, industrial, power, climate, and automation equipment because it is stable, reliable, and well-suited for wired communication over longer distances. With the ROAMiQ RS485 Chip, supported RS485 devices can become part of your connected vehicle environment, allowing ROAMiQ to monitor, control, and automate more of the systems inside your build.
RS485 Communication Support
Adds RS485 communication capability for compatible devices, allowing them to interface with the ROAMiQ Control Hub.
Expanded Device Compatibility
Designed to help integrate supported RS485-based components, including select power systems, sensors, climate equipment, lighting controllers, water systems, relays, and other automation devices.
Centralized Monitoring and Control
Bring compatible RS485 equipment into the ROAMiQ interface so users can monitor status, view data, and control supported functions from the ROAMiQ screen or connected interface.
Automation Ready
Use RS485-connected devices as part of ROAMiQ scenes, alerts, and automations. Trigger actions based on sensor data, equipment status, temperature, power conditions, or other supported device feedback.
Reliable Wired Communication
RS485 is a proven wired communication standard known for noise resistance and dependable performance in complex electrical environments, making it well-suited for campervans, RVs, marine systems, fleet vehicles, and specialty builds.
Clean System Integration
Reduces the need for isolated displays, separate controllers, and disconnected monitoring points by allowing compatible equipment to report into ROAMiQ.
Professional installation is recommended. Proper wiring, polarity, termination, grounding, device addressing, and communication settings must be verified before installation.
The installer is responsible for confirming that the connected device is compatible with the ROAMiQ RS485 Integration Chip and that all supported functions operate safely and correctly after installation.
Case size: 61.6 × 41.6 × 16.6 mm (2.43 × 1.64 × 0.65 in), approx. The RJ45 jack adds about 2.6 mm on top.
ROAMiQ · Integration chip
Links a compatible RS485 device to ROAMiQ over Wi-Fi, so you can monitor it, control it and use it in scenes and automations.
Pin numbers are from the V1.0.0 board. The RS485 pair is the same on both bus ports, so use the one that suits your device.
For devices with an RJ45 RS485 port. Two-wire RS485 (A and B), plus ground and 12V.
| Pin | Signal |
|---|---|
| 3, 7 | GND |
| 5 | RS485 A |
| 6 | RS485 B |
| 8 | +12V |
| 1, 2, 4 | Not connected |
For wired installs. Power and the RS485 pair arrive on one 4-pin connector.
| Pin | Signal |
|---|---|
| 1 | +12V |
| 2 | GND |
| 3 | RS485 B |
| 4 | RS485 A |
5V power instead of 12V, for installs where the bus cable carries data only. Power only: the USB-C port has no data connection.
Power the chip from one source: 12V (RJ45 pin 8 or 4-pin header pin 1) or USB-C (5V), not both.
120Ω termination is built in. A 120Ω resistor across A and B terminates the chip’s end of the RS485 pair.
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