220V 1000W Boiler Thermostat Regulator Circulation Pump Mechanical Temperature Controller Intelligent Control with Sensor Features: The pump automatically starts working when the water temperature reaches the set temperature, and automatically stops working when the water temperature is below the set temperature. Specification: Voltage: 220V Power: 3W Temperature Range: 0 to 100 ℃ Hysteresis Temperature: 5 Celsius Temperature Switch Deviation: ± 2 Ambient Temperature: -5 to 50 Celsius Size: 122mm*90mm*46mm (L*W*H) External Sensor: Lead length 1m, rubber Rerong package. Measuring Range: 5-100 degrees Current: 5A Error: ± 2 ℃ Installation Method: First, fix the thermostat 1m away from the boiler. The temperature probe should be attached to the highest point of the boiler's water temperature. Connect the power to the thermostat and also connect the thermostat to the power supply. After that, the thermostat indicator lights up, and the thermostat can work. Adjust the temperature control knob to set the desired temperature. Precautions: 1. The temperature probe must not exceed 100 degrees Celsius, such as the surface of an oven chimney. 2. There will be a slight difference between the surface temperature of the boiler and the circulating water temperature, but this does not affect the automatic circulation of the pump. 3. The power connection must be tightened for proper operation. 4. Size is for manual measurement, there may be a 0 to 2mm error, which is a normal phenomenon. Package includes: 1x Thermostat regulator with sensor