Thermostat. According to the temperature changes in the work environment, the switch inside the physical deformation, resulting in some special effects, resulting in conduction or disconnection of a series of automatic control components. Also known as temperature control switch, temperature protection temperature controller, referred to as the thermostat. Through the temperature protection device, the temperature reached the temperature controller, the temperature controller issue a switch command to control the operation of equipment in order to achieving the desired temperature and energy saving effect. The application is very wide, according to different types of thermostat, it can use in home appliances, motors, refrigeration or heating and many other products.