Electronics › Electronics › explanation of Water level controller cum indicator circuit › Hi Suman,P1,P2,P3 are
June 14, 2012 at 5:09 am #8033
P1,P2,P3 are different levels of water to be sensed.
P1 indicates Point 1
P2 indicates Point 2
P3 indicates Point3
No need of connections just leave it floating, when water level touches at that particular point you will get an output.