Forum Discussion

RJsfishin's avatar
RJsfishin
Explorer
Sep 19, 2014

LCD Backlit DC Voltmeter (doesn't require power)

I received this yesterday, (beeeeautiful) says it doesn't use any power. Now I'm not the smartest when it comes to elect tech, but CS alone tells me that is impossible. What you say ? http://www.eba...
ctpres's avatar
ctpres
Explorer
Sep 19, 2014
No power statement is just way to describe new style meter. Older version was four wire and required different power source. New version just needs two wires and gets meter power from voltage being measured which makes for a much simpler installation. Only down side is the range of voltage it will measure is limited on the low end (stops working around 7.5 volts) but that is not problem for typical 12 RV use. If your battery gets below 8 volts it really won't matter. Enjoy.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,363 PostsLatest Activity: Mar 04, 2026