my tank is 16" tall exterior size. What sender board do I need? (Garnet 709-2 SeeLevel RV (2) Tank Monitoring System)

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Garnet 709-2 SeeLevel RV (2) Tank Monitoring System

Keep track of your RV's water levels and battery voltage with this easy-to-use 2-Tank Monitor System. The LED display shows tank levels in percentage and works with most plastic or fiberglass holding tanks. Monitor fresh water, black water, and battery voltage to stay on top of your RV's ess... See More

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