RV holding tank level sensors not working?

Tank gauges

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RV holding tank level sensors not working?

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Thetford 36743 Waste Holding Tank Level Sensor

Length: 200mm. 1 x Marine Boat Holding Tank Sewage Level Sender Sensor 0-190ohm. Widely used in fuel, water and holding tank. High quality fuel Water

200mm Boat RV Black Water Tank Level Sensor Holding Tank Sending 0-190ohms

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200mm Boat RV Black Water Tank Level Sensor Holding Tank Sending 0

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