Introduction - If you have any usage issues, please Google them yourself
When the temperature control switch is open, if the temperature of the environment is greater than the setting temperature, the relay is absorbed and started to work. If the temperature of the environment is less than the setting temperature, the relay is released and the compressor stops working. This experiment can be applied to occasions where temperature control accuracy is not very high, for example, granaries, refrigerators, air conditioners, electric cookers, etc. If equipped with communication interface, multi-point temperature monitoring and control system can be made. It has very strong expansibility.