Power supply: AC100-240V,50-60Hz. . Power consumption: < 2.5W Rated impulse voltage: 2.5KV Housing: Plastic ABS Protection type: IP41 Mounting: Wall mounting Operation: 6 push buttons at the front cover. Accuracy of temperature measuring: ± 0.1oC Range of collector temperature measuring: -10oC ~220oC Range of tank temperature measuring: 0oC ~110oC Suitable power of pump: 1 pump possible to be connected Suitable power of HK (backup heating): 1pc ˂1500W . Inputs: 3 sensors,