[Seth81]

So in my sump I use a float style level switch for top off, another for water change, plus I use another one for a low level switch to protect my pump for a total of 3 level switches. I uses these super cheap float switches see pic below. Well in the past year I have had three of them fail! Usually while I am out of town! I think the problem is that the seal eventually fails and salt water gets into the switch as the water level is usually above most of the switches the entire switch is submersed. Probably these switches are not supposed to be fully submersed, but for a low level switch the only other option is to use a right angle switch and drill a hole in the sump, which also allows for no adjustment on switch position.

So today I have decided to spend some cash and buy an ultrasonic level transmitter. Does anyone have any suggestions on an affordable one?