1. When the pump's water outlet is completelyblocked(no water leakage and the pressure to the maximum value 11 kg.f/cm2),the power be automatically cut off and the pump motor stop. When thewater outlet is opened, the pump operating again. 4. An indicating arrowon the pump to direct the water , and it directs to the outlet water side. 2. Self priming smoothly, easy connecting system, powerful automatic pressure pump, extremely efficient, very low current draw and offer high capacity output. 3. 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. 5. Wide applications, such as for car washing machine, the solar water, remote control water equipment, some place need to control the switch frequently, somewhere saving, etc., Manufacturer: Akfldms