Fully supervised, PowerCode magnetic contact transmitter. For UL installations, for use with the UL listed control unit, model PowerMax+ only. The transmitter includes a built-in reed switch (that opens upon removal of a magnet placed near it) and an auxiliary hard-wired input, programmable as either N.C. or E.O.L., for use with additional sensors - pushbuttons, detectors, door contacts etc. Each input has a unique 24-bit PowerCode ID, selected in the factory from over 16 million possible code combinations.