HUAHA AC 80-300V LCD Digital Volt Meter Voltmeter US Plug Electric Pen Voltage Testers Electrical Instruments -Volt Panel Meter Voltage Tester Gauge (White)

This works well. I leave it plugged into my RV. Reads constant voltage and it lights up. Just plug it in.

Works as advertised.

Knowing the volts in the rv when plugged in at the campground is better than being blissfully ignorant and possibly damaging electric items such as AC. I watched the meter go from 124 to 112 in a recent campground; it varied depending on how many rigs were on the system and their power usage.

Works great. Already saved my RV. Was at a campground with 150 volts. Turnded power off and had them fix it

Works as expected. I use this to monitor the voltage when my Motorhome is plugged in at campgrounds

works great

Got this to make sure we have good power to our trailer when camping. It also makes a great night light.

Great product for the price. Very useful at our camper.

I use this to monitor how much voltage I have in my house. Avoid the upcoming brownouts and also once generator kicks in monitor its output.

good price fast shipping