Review on 📊 DROK 90538 Flat Plug AC Voltage Panel Power Line Test Monitor Gauge Meter - 110V 220V LCD Voltmeter by Kip Robinson

What else can I say? It fits snugly into a standard 120 volt AC outlet, is easy to read and accurately displays the current voltage coming out of the outlet. (I checked with a multimeter that it reads and displays the AC voltage accurately.) The fact that it's backlit not only makes it easier to read, but it also makes a great night light! As previous reviewers have pointed out, this unit is great for a night in an RV. We actually bought two, one for each bathroom in our RV. As well as reading and viewing the AC voltage, my wife and I use it to verify that our RV is not just plugged into shore power, but that there is actually power going into the RV and throughout the house. Highly recommended!