Portable Electrician Circuit Tester Pen

Safe and fast detection of zero line, live line, short circuit, etc., it's essential for electricians and households. Main Features Fast Identification of Null-live Wire The high intelligent chip delivers fast and sensitive identification of null and live wires. When the detection head touches the null wire, the green light is steady on; If it is a live wire red light and green light will be on at the same time. (Touch the bottom copper cap by hand when using) Short Circuit Detection Quickly detect whether there is a short circuit. If the green light is on, the wire is normal without rupture. If the indicator is off, the wire is disconnected and cannot be used normally. Safe and Waterproof High-quality durable PC shell, anti-fall, insulation, waterproof, to ensure safe use. Wide Application Widely used in home, industry, electric power, automobile maintenance, electrical testing, and other life and work scenes. Perfect gift for electricians, electronics enthusiasts, and fathers. Sup