Review on π Sperry Instruments VD7504GFI: DualCheck Non-Contact Voltage Detector + GFCI Outlet Circuit Analyzer with Visual & Audible Indicators, 50-1000V AC, 250 lb. Crush Rating by Alexander Scharon
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Crazy "button" battery is NOT included and there is no battery polarity indicator on the unit so you'll have to guess. device to work. Other brands stay on for a while when you turn them on, then turn off automatically after a minute or two. Not as sensitive as more popular brands (can't read if you hold it to the face of an active switch or outlet). I ran a parallel test. So it works, but you need a custom battery and it doesn't work as well as the others for a number of reasons.
- Sturdy finish
- Minor issues
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