Specifications: Color: silver Main materials: metal Diameter of mounting holes: 0.85'' Adjustable temperature range: 50℉ to 120℉ Box size: 3.82'' x 1.77'' x 2.56'' Input volt: 10 Amps / 120 Volts AC Power source: corded electric Upgrade Replacement Thermostat: the fan off temperature range of this attic fan thermostat controller is 50℉ to 120℉ (10℃ to 48.8℃), you can use it to control power attic ventilators to maximize energy savings and temperature security Finger Dial Adjustable Temperature Switch: no need screw driver anymore; This attic fan thermostat control has a finger dial switch with clear arrow indication, making it easier for you to rotate it to adjust the temperature point Wide Application: the thermostat switch can control up to 3 appliances simultaneously within 10 amps of current, you can use this programmable thermostat for greenhouse exhaust fan, attic fan and other exhaust cooling fan system Easy to Install: the home programmable thermostats has a clear wiring diagram right on the box, you can set it up in a few minutes, and no need of any extra professional tool Warm Tips: as the ambient temperature is constantly changing, the temperature of the thermostat by this effect may have some error, the error range is 5-10 degrees Fahrenheit