Motorhome LP Gas Alarm RV Propane Gas Detector Wall Mounted (White) Protects RVers by Sensing and Alarming When LP Gas Levels are Unsafe Power Source Input: 12 VDC Max 300mA ETL Listed & Tested to UL 1484 for Residential and RV Applications Approximate Overall Sensor Dimensions (without included wall plate): 3 x 4 x 1 Mounting Hardware Along with Wall Plate and Wires Included