The Telguard TG-1 Express has an extremely low power profile, and as such can usually be powered from the panel to which it is connected. At 30mA (average consumption WHILE IDLE), the power required by the TG-1 Express is about the same as what is used by many keypads.
Simply connect the Auxiliary power output from any voltage compatible (6- 16 VDC) panel to the DC input on the TG-1 Express. Using the panel to provide power for the TG-1 Express allows for a simpler installation, and eliminates the need for additional A/C outlets.
The installer shall verify that the control unit’s alarm current is not exceeded when a bell and the TG-1 Express are simultaneously connected. For panels with very limited power capabilities Telguard recommends using a Telguard TG-1B or TG-4 communicator, both of which utilize a battery backed-up A/C power source separate from the panel.