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Water Level Monitors

12 Volt Sump Pump Control
12 Volt Toilet Tank Refiller
Circuit checks swamp cooler water level:  10/31/2002  EDN - Design Ideas / A "swamp cooler" is an easy way to obtain effective air conditioning, especially in hot and dry climates, if a water source is readily available. Although most units are very reliable, the storage-reservoir control usually uses a single level-detector component. Failure of this component can lead to serious water damage..
Digital Water Wave/Tide/Level Meter (PIC16F876)
Simple Emergency Sump Pump Control:  Sump Pump Control for12V DC Bilge Pump
Water Activated Alarm
Water Level Alarm
Water Level Controller
Water Level Indicator With Alarm
Water Level Sensor
Water-Level Controller
Water-Level Sensor Uses Hysteresis:  08/21/00 Electronic Design - Ideas for Design / 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 eliminates problems with corrosion and wear and tear. The. . .
Waterpump Safety Guard for Fish-pond

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