Wema electronic level senders uses reed switch and magnetic field technology. The float is the only moving part of the sender, thereby minimizing the chances of mechanical failures. A stainless steel cage protects the float from debris and is removable in aiding the cleaning of the float.

12 or 24 volts, 2 wires from unit to gauge, 18/2 or 16/2 is sufficient wire size

We recommend if your waste discharge hose comes out the side of the tank at the bottom deduct 2" off the length of the sender. If your waste discharge hose comes off the top of the waste tank deduct 1"

All senders are 1 1/2" NPT, If your tank does not have this connection we have a  adapter that makes it for a easy installation