System Sensor SPSR Speaker Strobe

System Sensor SPSR SpectrAlert Advance series of notification appliances offers a wide range of speaker/strobe products for wall and ceiling applications, indoors and outdoors. The strobe portion is designed to be used in 12 or 24 volt, DC or FWR(full wave rectified) systems. The speaker portion can be operated with distribution amplifiers having an output voltage of either 25 or 70.7 volts.