Fluke 1AC-A1-II Volt-Alert AC Non-Contact Voltage Tester

The tip simply lights up when you touch it to the "hot" side of a Romex wire, instantly telling you if a wire is live or not. "Is this switch/receptacle that I'm about to take apart and work on/touch hot??" Well, now you know. It is important to use it for what it's designed for. It will not tell you if there is an open neutral or anything of the sort, so it's only good for minor troubleshooting (you'd need a Knopp, or something more specialized for that). If anything, it will err on the "hot" side. I.E: It will occasionally tell me a line is hot when it isn't (if there is allot going on in a box, or near dimmers etc.)
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