Perfect for troubleshooting live wire in homes workshops or industrial site, ensuring safe diagnostics of outlets, switches, and appliances across residential/commercial environment Engineered with strong ABS construction and ergonomic pen shaped designs, this electric detection pen delivers easy operate without calibration for precise electrical systems diagnostics Ideal for enthusiasts, electricians, and professional requiring stable electric verification during electrical installations, maintenance, or repair tasks The B18 not electric Tester safely detects 12V 240V current without physical featuring hearable/visual alerts through build in buzzers and LED indicators for fast hazard warnings This multifunctional electrical testing tool combines electric detection, circuit continuity check, and breakpoints identification in a lightweight ABS pen designs with 1 button operate, Manufacturer: BULAIDAI