Review on 💧 Waterproof DC 12V Car Digital Voltmeter Gauge with LED Display - Blue by Dwayne Pore

I installed this to keep an eye on the batteries in my van from my living room. I added about 50 feet of similar gauge wire to get in the right place, but it didn't seem to affect the accuracy when checking with a multimeter, checking the reading first before adding the extra length and after. And the displayed readings exactly matched the readings of the multimeter. The quality is not bad, there is a protective film on the front, so there were no scratches on it when it was received. Very satisfied.