How do I Install the XCVR2 on my 2GIG GC3 Alarm Panel?

The XCVR2 is not compatible with the 2GIG GC3. Instead, install the XCVR3-GC3 by connecting the four flying leads from the device to the panel. Red to (Smoke +), Black to Common (GND), Green to (RX), and White to (TX). Once connected, the XCVR3 should be placed away from the GC3 for best results.


The 2GIG XCVR3-GC3 is a 900 MHz transceiver which allows the 2GIG GC3 to communicate with the 2GIG Image2 wireless PIR motion with a still camera built in. The 2GIG GC3 must be on firmware version 3.0.1 or newer in order to support this hardware. You can check the panel's version by going to Home > System Info and Usage > System Info > Firmware Version. If you need to upgrade the GC3, check out Alarm Grid's GC3 Firmware Upgrade page.

To install the XCVR3-GC3, follow these steps:

  1. Power down the 2GIG GC3. Unplug the transformer from the wall. Remove the back cover from the GC3 by removing the set screw in the bottom (don't lose the screw) and pulling the front of the unit loose. Unplug the back-up battery from the main board.
  2. Wire the transceiver to the GC3 panel. Follow the color code below:
    1. Red connects to Smoke +
    2. Black connects to Common (GND)
    3. Green connects to RX
    4. White connects to TX
  3. Place the transceiver in its mounting location. The transceiver can be placed inside the wall, to hide it, or it can be mounted outside the wall. When placing the transceiver, try to get it as far from the 2GIG GC3 panel as possible for best reception.
  4. Reconnect power. Re-attach the back-up battery to the main board. Then, re-mount the front of the unit onto the back plate, and replace the set screw in the bottom. Finally, plug in the panel's power supply, and allow the system to boot up.

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