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Water Level Sensor by HYDROS
$ 43.65
Similar to the other review, I use this as a sensor on my ATO tank to alert me to refill the tank and also shut off the ATO pump to keep it from running dry. I also use one to control the ATO pump and another to alert me when my RO “waste” tank needs to be emptied. I need another one to shut off the RO Solenoid when the ATO is full.