Sensor adheres to the outside of your RV's holding tank to measure its fluid levels, and it sends those readings to a SeeLeveL monitor (sold separately) inside your RV. Sensor can be cut or stacked to fit the height of your tank.

Sensor adheres to the outside of your RV's holding tank to measure its fluid levels, and it sends those readings to a SeeLeveL monitor (sold separately) inside your RV. Can be cut or stacked to fit the height of your tank.

If you're upgrading your holding tank monitor to a new SeeLeveL system, you may want to cover up the hole left by that old, large display. This plastic plate has pre-drilled holes for the monitor, giving you some mounting options.

If you're mounting a SeeLeveL monitor (sold separately) to a metal surface, this will help prevent any shorts or electrical interference that could occur. Works like a plastic washer to prevent metal-on-metal contact.