Siemens 134-1510 THERMOSTAT, ELECTRIC LOW TEMPERATURE DETECTION, AUTOMATIC RESETSiemens 134 1510 Electric Low Temperature Detection Thermostat with automatic reset action, 120 240 Vac switching, single pole, double throw switch action, 12 degree F switching differential and averaging sensing bulb with capillary element. Universal Mounting Bracket included. Additional Information Dimensions (W x H x D)2. 32 x 2. 6 x 5. 43 in Setpoint setting range35 to 45 F Switching differential12 F