A good pump control switch should have：

1 high performance sealing

2 high performance sensor

3 high performance material 

FS-1( water level control switch) In the sewage or rain water pump station, it is often mixed with a large number of solid impurities, long fiber solid waste, traditional float switch, cable may be entangled by solid waste, resulting in sensor stuck, failure, will cause the long-term operation of the pump does not stop, or does not run, unable to discharge the medium in time, the pump station does not work, increase a lot of maintenance work, have an impact on the life of the pump Sound, FS-1 unique sensor design, to avoid a series of problems caused by cable winding, sensor operation is stable, is the best choice for sewage pumping station.