Powerhorn is used as an additional audio alarm unit for use with the X10 Home Security Systems SC28E, SafeGuard and TotalGuard, which gives an additional independent 110 decibel sound output when the security system is triggered.
The Siren will only trip a few seconds later after the alarm trips.
It counts the sequence transmitted to flash lights connected to Lamp Modules en wall switch modules and will trip after the lights have flashed 4 or 5 times. This prevents it from being accidentally tripped from any other X10 controller.
When tripped, the Powerhorn emits a two-tone alarm which alternates its tone coincidentally with the lights flashing on and off. After the security system resets, the Powerhorn sustains its last tone for a few seconds and then shuts off automatically.
You can also trip the Powerhorn from any other X10 controller, which is useful in panic situations. It can be set to respond to any one of 256 X10 codes available (16 Housecodes x 16 unit codes). You simply press ALL Lights ON, then All Units OFF, 4 or 5 times, or press the Unit code corresponding to the number set on the Powerhorn, then Press ON, then OFF 4 or 5 times.