A low-voltage electronic circuit that senses upper and lower water levels is often used for alarms and sump-pump activation. Since an electronic sensor has no moving mechanical parts, it ...

Description of water sensor: in most houses, water is first stored in an underground tank (UGT) and from there it is pumped up to the overhead tank (OHT) located on the roof. People generally switch ...

[Greg] knows this feeling quite well, having returned home to a sopping wet floor and ... would monitor the water level using an IR sensor. The circuit simply shuts off the pump if the water ...