This product is mainly used in solar water heater equipment, using temperature difference and temperature to control output. This product is equipped with two output control, one way to control the temperature difference between the two temperature zones, when the temperature difference reaches the set value, the automatic operation of the pump cycle, so that the temperature of the two temperature zones to achieve balance, the other way to control heating: when solar heating can not reach the set temperature, the electric heating system automatically starts heating to set temperature. And automatically thermostat within the control range of temperature difference. Specification 1. Working Voltage: AC220V + 1050HZ / 60HZ 2, Output Load: 5A / 220V / AC 3, Power: 3W 4, Working Environment Temperature: - 10 ~ 50RH90 5, Heating Control Range: 2 ~ 996, Temperature Difference Start Control: 3 ~ 507, Resolution: 1 Accuracy: + 18, Input Signal: Two-way Transmission Sensor, 20KX1.5m X2 9, machine size: 76 (wide) *35 (high) *76 (deep) mm 10, hole size: 71 (wide) *29 (high) mm

Packing: 1PC