UNI-T UT08B Receptical Tester

UNI-T UT08B Receptical Tester

The UNI-T UT08B is a plug-in receptacle tester designed to quickly verify the correct wiring of 3-wire AC outlets. Rather than using complex instruments or needing to access internal wiring, a user simply inserts the tester into a standard socket. The device then illuminates combinations of LEDs to indicate whether the hot, neutral, and ground lines are correctly connected—or whether there are wiring faults such as reversed polarity or open circuits.

Beyond basic wiring diagnostics, the UT08B includes a GFCI / RCD test function: it can simulate a 6–9 mA leakage current to check whether a protective device (GFCI/RCD) will trip as intended. This turns the UT08B from a simple wiring indicator into a safety verification tool. The housing is molded for minimal bulk, allowing it to be carried easily, and the LED indicators are positioned for quick readability. Because it draws minimal current (≈0.3 W) during operation, it remains safe to leave inserted for short checks.

In real-world use, the UT08B becomes a go-to tool for electricians, site inspectors, and DIYers wanting a fast check before plugging in equipment. It helps identify potentially dangerous wiring faults—missing ground, reversed hot/neutral, or incorrectly wired circuits—without disassembly. The built-in GFCI test function adds a layer of safety validation. For anyone needing to verify receptacle safety in homes, offices, or commercial installations, the UT08B offers a compact, user-friendly option.