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The Protmex PT106B Socket Tester Pro is a professional-grade outlet diagnostic tool designed to make electrical testing fast, accurate, and straightforward. Simply plug it into any US standard 110V/120V outlet and get instant results through its bright LED indicators and backlit digital LCD display. The tester identifies 7 common wiring faults, including Open Ground, Open Neutral, Open Live, Live/Neutral Reverse, and Live/Ground Reverse conditions, giving you clear, reliable readings in seconds. A dedicated GFCI test button lets you verify the functionality of your protective devices, helping detect potential leakage hazards before they become serious problems. With a measurement range of 48250V AC and 4565Hz frequency support, the PT106B delivers high accuracy across a wide range of applications. Its compact, durable ABS shell weighs just around 3 ounces, making it easy to carry in a toolbox, pocket, or bag. Whether you're a licensed electrician, a property manager, or a hands-on homeowner, the Protmex PT106B is a reliable and user-friendly tool for ensuring safe and correctly wired electrical outlets. Each package includes the socket tester and a user manual.