Features Digital solar water heater thermostat, it can be used for cooling and heating incubators, easy to install and use. Control electric heating. When the solar heating system does not exceed the heating temperature difference of the set temperature, the electric heating system automatically starts the heating to set the temperature and automatically adjusts the temperature in the temperature It is mainly used in solar water heating equipment, using temperature difference and temperature to control the output. When the temperature difference reaches the set value, the water pump cycle runs automatically to adjust the temperature in both temperature zones. Control the water valve to automatically add water in case of water shortage and automatically stop adding water. Specification: Condition: 100% Brand New Item type: thermostat. Material: ABS Operating 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°C Accuracy: ±1℃ Input signal: Bidirectional sensor: 20KX1,5mX2 3-pin water level probe Size: approx. 88 x 72 x 54 mm/3.5 x 2.8 x 2.1 inches Package list: 1 x Thermostat 2 x sensor with wire Tips: 1. Please allow for a 0 - 1 inch error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated the same, the colour of the item shown in the photos may be slightly different from the actual item. Please take the real one by default. 3. Please note that the new type and old type of this product will be sent at random, and make sure you do not mind before ordering. Package List 1 x Thermostat 2 x Sensor with Wire