Monitor your RV’s holding tank levels accurately to within a quarter inch using this external sensor system. Senders mount to the outside of plastic and polyethylene tanks, eliminating the sewage accumulation problems that plague internal probe designs. Both stackable and cuttable versions are available to fit virtually any tank shape.

A straightforward two-wire connection links to your existing bus system. Limited 1-year warranty included.

• LED display, 2.8″ × 4″ panel size
• Measures up to 3 holding tanks
• Tracks fresh water, grey water, and black water levels
• Tank sensor and connector provided