... water level range100%,80%,50%,30%.Set fill the water level rangewater shortage,30%,50%,80%,100%InputA group of AT35-5 level sensor ... normally closed contact output control add water solenoid valve; Road normally open relay contact output to control the water shortage in anti- ... motor or pump, the greater the load required to exchange the expansion of the contactor. Anti-dry protectionWater for the ...