LINE VOLTAGE THERMOSTAT, SWITCH ACTION OPEN ON RISE, NUMBER OF SWITCHES 1, DIFFERENTIAL +/-1 DEGREES F, HEIGHT 4 1/4 IN, WIDTH 3 5/8 IN, DEPTH 1 1/4 IN, TEMP. SENSITIVITY 1 DEGREES F, SENSOR TYPE NTC THERMISTOR, FOR USE WITH HEAT ONLY: REQUIRES 120V POWER SOURCE, COLOR WHITE, ENCLOSURE TYPE PVC, 3 A, 1, 4, INCLUDES MOUNTING HARDWARE, CETL, 15 A, 1, 1