Product Features ■ Wide temperature Setting ■ Small size ■ Simple Installation ■ High Sensitivity The temperature sensing range can be customized as required, and it can be set within -20 to+80℃. Mechanical thermostats are suitable for indoor temperature control in industrial, commercial and civil buildings. Mechanical thermostats sense temperature through inflatable membrane boxes and compare it with the user-set temperature to automatically control heating and heat dissipation equipment such as PTC heaters and cooling fans, in order to achieve a constant indoor temperature. The working principle of mechanical temperature controllers: When the temperature rises, the heat generated is transferred to the bimetallic disc. Once the preset temperature value is reached, it acts rapidly, causing the contacts to open or close through the mechanism. When the temperature drops to the reset temperature set, the bimetallic disc quickly returns to its original position, causing the contacts to close or open, thus achieving the purpose of connecting or disconnecting the circuit Thereby controlling the circuit