Features It is equipped with two-outlet control, temperature difference control at two temperature zones. It will control the heating system and automatically maintain the water temperature within the temperature deference range. The products are used in solar water heater, temperature difference and temperature to control the output. When the temperature reaches the set value, it automatically executes the circulation of the water pump and establishes the temperature balance of the two temperature zones. The other channel controls the electric heating, when the solar heater has not reached the set temperature, the electric heating system can automatically start and heat to the set temperature. Features: Operating voltage: AC220V ±10% (50Hz/60Hz). Output load: 5A/220V/AC Power consumption: ≤3WHeating control range: 2℃~99℃ Temp. Difference start control: 3℃~50℃ Resolution: 1°C Accuracy: ±1℃Input signal: 2-channel sensor, 20KX1.5MX2 Size: 76 x 76 x 35 mm/2.99 x 2.99 x 1.37 inches. Operating temperature: -10℃~50℃ Operating Humidity: RH≤90% Features: When the temperature reaches the set value, it automatically runs the circulation of the water pump and establishes the temperature balance of the two temperature zones. The products are used in the solar water heater, the temperature difference and the temperature to control the output. The other channel controls the electric heating, when the solar heater has not reached the set temperature, the electric heating system can automatically start and heat to the set temperature. two outputs, one control temperature difference to two temperature zones. It will control the heating system and automatically maintain the water temperature within the temperature deference range. Package includes: 1 x Temperature Controller 2 x Sensor Probes Note: 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