A simple and useful tool that gives you confidence that a household's AC cord is live or not. During the device's first test run, it squeaked happily when it came near a working outlet. Conversely, it didn't work when aimed at non-AC objects. For example, when you touch the DC cable to charge an iPhone, for example, there was no sound. This is expected. Item arrived with 2 AAA batteries installed. Although there is no paper manual with the kit, I found information on the internet and in any case, the tool is easy to work with. The provider includes an LED light which comes in handy when used somewhere in a dark spooky basement I think. Meets all requirements for what I was looking for, encountered no problems. Five stars.
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