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does anyone know which way the sensor is supposed to be in the tank, is the notch for the sensor clip supposed to be on top or bottom? and is the switch supposed to open or closed when full? any help is appreciated thanks
I would say you have a 50/50 chance of getting it right. If it were me, those odds would be down around 10/90... but that is just me. Anyway, don't install it into the tank, just connect the wires and hold it in your hand one way and check your alarm, and then hold it the other way. In one position it will alarm and in the other it wont. Then insert it the way it was that gave you an alarm, which would be empty. Good luck...