# How to wire the Ericsson IBR900 / IBR600 router for digital alerting

06/12/2026 7:13 am CDT

This article explains how to wire the Ericsson IBR900 / IBR600 router to send digital alerts to HAAS Alert’s Safety Cloud.

**Warning**: When using a GPIO extensibility cable, **DO NOT** leave unused wires exposed. Cap or tape off unused wires to prevent electrical shorts or damage.

The IBR900 / IBR600 can be wired using one of three methods, depending on whether ignition sensing is used and which cable is available.

- **Option 1**: Use the 4-pin square power port (default)

Use this option only if ignition sensing is _not_ in use.
- **Option 2**: Use the GPIO extensibility cable

Use this option if:

- Ignition sensing (orange wire) is already in use
  - 4-Pin square power port wire is unusable for warning light activation
- **Option 3**: Use the GPIO extensibility dock w/cable

Use this option only if the extensibility dock has been installed

|     |     |     |
| --- | --- | --- |
| **Option (Use ONE Only)** | **Description** | **Pin-Out** |
|  | **Connection (Option 1)**<br>- Use the **orange wire** from the 4-pin square power port cable (Input / Pin 3).<br>- Connect the orange wire to the **positive side** of the vehicle's warning lights switch.<br>If the orange wire is already used for ignition sensing, **Option 2 or 3** must be used.<br> R2R (if subscribed) will use the blue wire (Output / Pin 4). |  |
|  |
|  | **Connection (Option 2)**<br>- Use Orange (preferred), yellow, blue, white, or green wires on the GPIO extensibility harness:<br>  <br>  - Orange → Pin 7<br>  - Yellow → Pin 2<br>  - Blue → Pin 3<br>  - White → Pin 4<br>  - Green → Pin 5<br>- Connect any **one** of these GPIO wires to the **positive side** of the vehicle's warning lights switch.<br>R2R (if subscribed) will use one of the remaining GPIO 1, 2, or 3 (Pins 7, 6, or 5) wires. |  |
|  |
|  | **Connection (Option 3) w/Extensibility Dock**<br>- Use orange (preferred), yellow, blue, white, or green.<br>  <br>  - Orange -> Pin 5<br>  - Yellow -> Pin 6<br>  - Blue -> Pin 7<br>  - White -> Pin 8<br>  - Green -> Pin 9<br>- Connect any **one** of these GPIO wires to the **positive side** of the vehicle's warning lights switch.<br>R2R (if subscribed) will use one of the remaining GPIO 1, 2, or 3 (Pins 7, 6, or 5) wires. |  |

## Important Notes

- Only **one** wire is used to detect warning light activation
- Ensure connections are made to the **positive** side of the warning lights switch
- Always secure unused wires with heat shrink or electrical tape if using the extensibility cable
- If unsure which cable to use, contact [HAAS Alert](mailto:support@haasalert.com) support for guidance.