①. The mechanical thermostat temperature controlling range is from 0 Celsius to 60 Celsius, for use to control heater. The adjustable button is for easy and convenient to adjust the controlling temperature. ②. When the ambient temperature is lower than the temperature set by the thermostat, the circuit close and the heater equipment starts. When the ambient temperature is higher than the temperature set by the thermostat, the circuit is disconnected and the heater equipment stops. ③. The bottom of KTS011 mechanical temperature controller switch is with 2 wire interfaces, which can make wire connection become more sturdy. ④. The mechanical temperature control switch mainly use for controlling heating applications. ⑤. About temperature: Temperature deviation about 10 degree Celsius. ⑥. Name: Cabinet temperature control switch. ⑦. Features: heating and heat dissipation, temperature control, simple setting. ⑧. The product is suitable for barriers, ATM machines, outdoor power distribution cabinets, cabinets, and vending machines. ⑨. Colour: red ⑩. Material: ABS ⑪. Size: 60 x 33mm ⑫. Package Contents: 1 x thermostat