3KW submersible pump remote internal remote control transmitting and receiving motherboard uses is current the most advanced 433MHz superheterodyne receiver module, super heterodyne transmitter receive the benefits of the module is using for a long time can not occur in the process of frequency offset, won't appear misoperation. The protection circuit uses the most advanced electronic mutual inductor lack of phase protection system, can protect more than 95% of the submersible pump, because the phase of the lack of electricity and burn submersible pump. Remote control distance: in the actual test, road test accessibility, 3000 meters.