Special Features:

Designed to provide a common coded signal to connected alarm via alarm extender module, model ae-30; actuation of the module is from a high going dc signal; actuation may also be manual; dual input actuation terminals are provided to facilitate programming; module contain solid state circuitry to supply output current at a controlled cadence of 120 pulses per min; these signals in turn can control up to five audible signal circuits

Properties:

An automatic electrical, electromechanical, or electronic device which generates and/or controls the energy which actuates electrical alarms such as bells, horns, sirens, buzzers, lights, and which does not in itself contain the actual alarm. If complete with alarm, the device takes the name of the type of alarm, such as alarm (as modified).