220V 10A Automatic Water Level Control Switch, Pump Controller Water Tank Level Detector (Switch)

needed to control my well pump, so this coupled with the sensor's works perfectly.I have the pump pumping into a 50 gallon header tank and when the level drops to half way I needed the pump to come on and shut off when it reached near the top.I coupled this controller to the sensors and then took the mains power output into a mains relay as the wires on this unit are very thin and I did not trust the pump power going through them .Just the neutral wire from the pump is fed into and out of the relay (so it acts as a switch just on the neutral wire) and the live wire goes direct to the pump power cable. All housed in an outdoor clear front power box.I put the sensor wires into 3 different length 1/8 internal diameter plastic tubes glued together so the water flow would not swirl them around when the tank is filling and the system works perfectly.