Wide ApplicationIt is applicable to all kinds of seafood machines, HVAC compressor, freezer, refrigerator, air conditioner, fermentation room, freezer, water chiller and other equipment requiring automatic change of refrigeration and heating. Good practicabilityYou can choose cooling or heating mode. This temperature controller keeps your environment within the desired temperature range. Temperature regulation range: -50-110C. The control accuracy is 0.1C. Input power supply: AC 110-220V. Safe to useYou can set the maximum / minimum maximum temperature to prevent accidents. High temperature alarm, when the measured temperature reaches the setting temperature, the Controller will give an alarm. Easy to useSensor thermostat - switch automatically activates cooling or heating to maintain a constant temperature . A comfortable and convenient experience. 1. Check if the temperature sensor is missing or damaged. 2. Heating mode high temperature protection 3. Low temperature protection in refrigeration mode The relay in the protection mode is automatically disconnected. Using keys: the thermostatic panel has three keys, key +, key -, SET Key