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Water Liquid Level Detection Module Switch Sensoring Controller 12V

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Product Introduction
1.Relay J:control pump power
2.Capactor C1:eliminate signal wire inteference
3.IC:NE555 connects Schmidt trigger circuit,using its return difference to sustain
4.Auto Draw Water:when water level is lower than C,C point will hang in the air.IC pin-2 is lower than 1/Vcc,pin-3 output high level,and relay will get electricity and operate.Start up water pump to draw water, then water level will rise
5.Intermediate Maintain:when water level increases between A and B,resistor R4 is connected to circuit in series,F point potential will be controlled wihthin 1/2Vcc,trigger remain original state
6.Draw Water Auto Stop:whene water level increases to A point,because of water's small resistance,F point potenital is higher than 2/3Vcc;IC pin-3 output low level,and relay will power off,water pump stop draw watering

Sample Application:

 

Mechanichal Drawing:

 

Pin Definitions:

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Water Liquid Level Detection Module Switch Sensoring Controller 12V
$4.26
$5.19