How Do I Add a Honeywell Siren to a 2GIG GC3?

You can add a hard-wired Honeywell siren to a 2GIG GC3 system by connecting the siren to the bell terminals on the circuit board of the panel. The appropriate terminals are labeled “BELL-” and “BELL+”, and they connect to the positive and negative terminals of the siren through a wire.

The bell output is designed to support sirens that use 6-12 volts and have a power requirement of 120mA or lower. If the siren uses 120mA or less, the siren will connect its positive and negative terminals to the positive and negative bell output terminals on the panel. The wired siren will follow the the existing siren settings in programming.

However, there are many sirens that will require more power than the 120mA that the 2GIG GC3 provides. These sirens will require a separate power supply and a hard-wired relay in order to be used with the panel. The recommended relay to use is the Altronix RBSNTTL. As for the external power supply, any 12 volt power supply will work, but we recommend using the Honeywell AD12612. This power supply provides either 6VDC or 12VDC with 1.2 Amps of available power.

Complete the following steps to wire an external siren that uses more than 120mA to a 2GIG GC3 security panel:

1. Power-down the panel. Unplug the panel's transformer from its wall outlet. Remove the set screw on the bottom of the system. Remove the system from its wall-plate. Unplug the backup battery from the main board. The panel should power-down.
2. Connect the bell terminals. The BELL+ terminal connects to the TRG+ terminal on the relay. The BELL- terminal connects to the REG- terminal on the relay and the negative (-) terminal under DC OUTPUT/BATT on the power supply.
3. Wire the relay. Connect the TRG- and NEG- terminals together with a small piece of wire. Connect the POS+ and C terminals on the relay to the (+) terminal under DC OUTPUT/BATT on the power supply. Connect the NO terminal on the relay to the (+) terminal on the siren.
4. Wire the power supply. Connect the 1361 transformer to the AC INPUT terminals. As this is AC, there is no polarity. Connect the (-) battery terminal to the (-) terminal under DC OUTPUT/BATT. Connect the (+) battery terminal to the (+) battery terminal under DC OUTPUT/BATT. Connect the (-) terminal of the siren to the (-) terminal under DC OUTPUT/BATT.