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Fluke ST120 and ST120+ GFCI Socket Testers check that each wire in an outlet is properly connected to the building’s electrical system. The ST120+ tester has an audible alert that will beep anytime voltage is detected. When switched on, the ST120+ integrated beeper also alerts the user to a hazardous voltage at the outlet, even if the wiring is incorrect. These ST120 testers feature bright LEDs and a chart on the front for quick and easy verification of the wiring of an outlet.
The included GFCI test button on both socket testers allows the testing of GFCI outlet operations, ensuring these testers can verify the GFCI-quipped output operation with a single push. If the GFCI trips as expected, then continue. If not, take a closer look. Fluke ST120 and ST120+ GFCI Socket Testers are able to identify several common wiring errors, including neutral and reverse phase wires, and open ground.
