When the pump's water outlet is completely blocked(no water leakage and the pressure goes to the maximum value 11 kg.f/cm2),the power will be automatically cut off and the pump motor will stop. When the water outlet is opened,the pump will start operating again. Self priming smoothly,easy connecting system,powerful automatic pressure pump,extremely efficient,very low current draw and offer high capacity output. ABS solid construction body,soft rubber mounting,stable and heavy duty equipment.Easy to dissipate heat with two big holes on one end of the pump body. An indicating arrow on the pump surface to direct the water flow,and it directs to the outlet water side. Wide applications,such as for car washing machine,the solar energy water,remote control water equipment,some place need to control the switch frequently,somewhere energy saving,etc., Manufacturer: CCZRD