Using everlasting magnet motor technology, in contrast with regular motors, larger energy efficiency, extra safe operation built-in inverter can robotically modify the rate of the pump in holding with the actual water call for to realize on-demand water delivery it is within the top era or the trough period, it is going to make sure the stable supply of family water overload defense device, computerized power off when the present is simply too large, preserve the motor is acceptable for pressurization of family daily life water, equivalent to kitchen, bathroom, and so forth magnet motor operating noise is lower, compatible for domestic use.