it's just your simple Solar Charge Controller, which tells you the amps the solar is providing to your coach batteries - the other unit is your basic VOLTAGE reading for your House batteries.
The solar power simply recharges your House batteries, while you are not driving(motorhome alternators usually also charge the House batteries), or are not plugged in or running the generator. It gives you more time off-grid, without running the generator to keep your House batteries charged.
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...2014 Ameri lite 259BH...
the Turners...
two Campers, two Electric Cars
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