Wide application: Applicable to all kinds of seafood machines, HVAC compressors, freezers, refrigerators, air conditioners, fermentation rooms, freezers, water coolers and other equipment that requires automatic change of cooling and temperature. Calibration function Temperature calibration. You can calibrate the temperature as needed. The digital temperature controller is worth purchasing. Good practicability. You can choose between cooling and heating mode. This temperature controller keeps your environment within the desired temperature range. Temperature control range: -50-110 °C. The control accuracy is 0.1 °C. Input power supply: AC 110-220 V. Safety in use. You can set the maximum high/minimum temperature to avoid accidents. High temperature alarm: When the measured temperature reaches the set temperature, the controller will give an alarm. Easy to use. The thermostat sensor switch automatically activates cooling or heating to maintain a constant temperature. A comfortable and