Circuit Analyzer

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The Klein Tools RT390 Circuit Analyzer tests wiring conditions in standard North American 120V electrical outlets. It identifies common wiring faults, displays AC line voltage, tes ts AFCI and GFCI devices, and measures their trip time and trip current. The analyzer also performs voltage-drop tests under 12A, 15A, and 20A loads. Results appear clearly on its large color LCD screen, making electrical circuit diagnostics easier to understand. Show more