Is a Honeywell 5818MNL compatible with a 2GIG GC3?

Yes, a Honeywell 5818MNL is compatible with a 2GIG GC3. The 5818MNL is part of the Honeywell 5800 Series of wireless sensors, and uni-directional 5800 Series devices are readily compatible with the GC3 system. You will not need to use any additional add-ons to use the 5818MNL with the GC3.

All of the 5800 Series sensors work by sending an RF signal to the panel at a frequency of 345MHz. As long as the panel is able to recognize this type of signal, a 5800 Series device will be able to function properly. Since the 2GIG GC3 is designed to accept the 345MHz RF signal, the panel will automatically accept the 5818MNL, with no signal converter being required.

In order for the 5818MNL to work with the 2GIG GC3, it must be programmed into the panel. This can be done by accessing the system configuration menu of the GC3 system and assigning the 5818MNL to a wireless zone. You will need to know the installer code for the GC3, the default code being 1561, to access this menu.

The video shown below will help you program the Honeywell 5818MNL to the 2GIG GC3:

Remember, as a recessed door and window sensor, the 5818MNL will need to be installed inside the door or window frame itself. This requires drilling a 3/4" diameter, 3" deep hole into the door or window frame. Additionally, the sensor's corresponding magnet will require a 3/8" diameter, 1/2" deep hole that is drilled into the door or window itself.

We recommend installing the 5818MNL sensor itself into the non-moving part of the door or window so that it is not likely to be damaged when the door or window is opened and closed. After the sensor has been installed and programmed into the panel, you should test the device to make sure that it is working properly.

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