System Sensor B200S-LF-WHSystem Sensor B200S LF WH Low Frequency Intelligent Sounder Base (White) is designed for use with various addressable detector heads. COMPATIBLE for use with with System Sensor Models MDL, MDL3R, MDLW, MDL3W and SYNC 1 Mount with mounting plate (included) directly to an electrical box. The plate will mount directly to 4" square, 4" octagon, 31 2" octagon, single gang or double gang junction boxes.
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