Easy to Install: Adopt G1 Inch adapter for you to connect with the water pump quickly and easy. Automatic Working: The starts pressure can be adjusted 1.2Bar, 1.5Bar, 2.2Bar, the maximum pressure is 10Bar. When the water pressure is lower than the starting pressure, the water pump starts to pressurize. Water shortage automatic protections function to avert water pump from burning out, prolong the pump's service time. The pressure gauge design allows you to read the current pressure easily, giving you a better experience. Wide Applications: This tool can be used in a variety of self-priming pumps, such as jet pumps, centrifugal pumps, garden pumps and other water supplys systems. Material: plastics+copper Rated voltage: 220V-240V Working frequency: 50/60Hz Max. using current: 10A Max. power: 1.1KW Starts pressure: 1.2bar, 1.5bar, 2.2bar Maximum pressure: 10bar Threaded interface: G1inch Package size: 227 * 179 * 168mm / 8.9 * 7.0 * 6.6in Package weight: 1300g / 2.9ounce Packing list:1 * Automatic Water Pump Controller.Items from Sheng Xinshun's shop