Socket tester can help you check house wiring and connection polarity of socket, it can also use to test leakage tripping. It is a professional socket tester which rapidly detect whether the socket's wire connection is correct or not. Features: Portable Socket Tester: Advanced socket to quickly detect whether the plug wire connection is correct or not. Compact size, light weight and convenient to use. Wonderful Design: Designed with a compact ergonomic and Hi-Impact resistant ABS housing, which maintains an above industry standard impact & crush resistant rating. Plug and Play: No battery required, just simply plug into a standard outlet to work, easy to use. Detect 6 Commom Wiring Issue: It is designed to detect the most common wiring problems of correct, open ground, open neutral, live/neutral reverse, live/ground reverse, live/ground reverse, missing ground. Wide Application: Widely used for electrical maintenance testing, office sockets testing, power strip testing, and wall sockets testing in schools, laboratories, factories and other social fields. Acceptance of home improvement and safety inspection, save you a lot of time in testing problems with sockets. Specifications: Plug: EU / US (optional) Color: Black / White (optional) Material: ABS Rated Voltage: 250V, 60Hz RCD Current: 6mA Item Size: 56 * 56 * 44mm / 2.2 * 2.2 * 1.73in Item Weight: 48.6g / 1.71oz Package Weight: 51g / 1.79oz Package Size: 5.8 * 4.9 * 5.9cm / 2.28 * 1.93 * 2.32in Package List: 1 * Socket Tester 1 * Socket Tester