Potter HSC-4R 4-Wire Base/Relay 43ma

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4-WIRE BASE/RELAY 43MA The SB Series is a 6" polarized base with annunciator output featuring a current limiting resistor, and a blocking diode to enhance annunciator function. The SB Series Smoke Detector base is designed specifically for use with the Potter Smoke Detector Models IS-24, PS-24 and PS-24H. Show more