17/08/2026
RV Electronics Water Tank Gauges And Senders Can Get Confusing, So Here's The Breakdown.
LED gauges run off their own battery, LCD gauges run off 12V so no battery changes needed. Every gauge needs a sender, which measures water level using electrical current, and cables come in 2.5m, 5m, or 7.5m, plus an extension option if you need to go longer. For deep tanks, there's also a programmable floating sender option.
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