HUAHAAC 80-300V LCD Digital Volt Meter Voltmeter US Plug Electric Pen Voltage rs Electrical Instruments -Volt Panel Meter Voltage r Gauge (White)

With it could probed that there is a hi level voltage in my building

I put this in my RV. It solved a frustrating problem. It was often difficult to tell the quality of power at different places where I parked. Sometimes I had to use long extension cords to plug in at friend's houses, etc. Voltage drop can be pronounced over long distances, so with this device, I can tell the exact status wherever I am parked. I am amazed that they don't build them into every RV (although they are becoming more common).If you are considering a digital AC volt meter, this one is well made and quite reliable.

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.I found this item helpful.

I purchased the HUAHA AC 80-300v LCD digital volt meter for my RV so that I can keep tabs on my power levels at different camp sites. I have used the volt meter for over a month and it has served me well to date. I would recommend this product if you are concern about your in coming power levels.

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.