Features 1、Digital solar water heater thermostat, it can be used for cooling and heating incubators, easy to install and use. 2、It is mainly used in solar water heating equipment, using temperature difference and temperature to control output. 3、Control the water valve to automatically add water when there is water shortage, and automatically stop adding water. 4、When the temperature difference reaches the set value, the water pump cycle will automatically run to set the temperature in the two temperature zones. 5、Control electric heating. When solar heating system does not exceed the heating temperature difference of set temperature, electric heating system will automatically start heating to set temperature and automatically adjust temperature within temperature difference control range. Specification Condition: 100% Brand New Item Type: Thermostat Material: ABS Working Voltage: AC220V ±10% 50HZ/60HZ Output Load: 5A/220V/AC X3 Power Consumption: ≤3W Working Environment Temperature: -10℃-50℃ RH≤90% Heating Control Range: 2℃-99℃ Temperature Difference Start Control: 3℃-50℃ Resolution: 1℃ Accuracy: ±1℃ Input Signal: 2-Way Sensor: 20KX1.5mX2 Size: Approx. 88x72x54mm / 3.5x2.8x2.1in Package List 1 x Thermostat 2 x Sensor with Wire