[Seth81]

For my ATO and AWC it's 24 VDC, I use 120 VAC for my SW mixing tank.

Originally Posted by gregzz4

Are you running 120v through your switches ? This will cook them in short order
They're best used with low voltage
If you must use them on a 120v circuit, check out my thread on how to wire them through a relay

Wiring a float and relay to protect your ATO pump and more

One of the members posted this sensor link awhile back