AMAZON.COM AC Plug In Voltmeter
It has a POT! And it's a DROK! DROK® Flat Plug AC 80-300V Voltage Panel Power Line Volt Test Monitor Gauge Meter AC 110V 220V Digital LCD Voltmeter for RV Boat Camper Household Factory ...
Forum Discussion
RoyB wrote:
Mine has the GREEN SCALE to remind me where the safe zone is...
None of my DC VOLTMETERS have a built-in settable alarm to tell me when I am approaching 12.0VDC (appx 50% charge state mode)... Makes me have to keep an eye on it...
It will likely outlast the owner. No annoying Sci-Fi blue screen either.
And - yep, you need a solar to keep an eye on those 12V things for you. But you already know this :)
