Review on ⚡ Ultimate Non-Contact Voltage Tester Pen - AC12-1000V, LED Flashlight, Buzzer Alarm - Find Live/Null Wire, Locate Breakpoints by Marc Gallner

I had a power outage recently and couldn't figure out if a faulty outlet or backbox was the cause. I had this tool and it quickly solved this problem. Once you take it out of the box, it's ready to use. Batteries are included, so all you have to do is hold down the power button and it will do the rest. If there is AC where you point it, it will notify you. There is also a built in flashlight for use in the dark. All in all a great tool.