The automatic switch adopts electronics theory , controlled by water current . It boosts pressure automatically when the tap is on , and turn off when the tap is off . It is used conveniently , and also saves power. Its copper pump body , copper impeller and stainless steel shaft are corrosion-resistant stainless . The whole pump is sealed well and the conveyed water won't be unhealthy total suction lift is high Flow rate is large. It starts well , switches sensitively and automatically , and produces low noise . It also is designed to be low temperature , small volume , delicate appearance and long-time using . pump body is designed to be gathered with auto more convenient . The automatic switch adopts the electric circuitry to control , less trouble . The impeller adopts the centrigual construction , mute design and some materious of the parts are copper. The water-supply is much more sanitary because of the no-rust . the pump inside has the fan-cooling device to much more effectively to cool the temperature of the motor and long-time using., Manufacturer: ieLsngai