Durable rust proof construction for secure fastening and long service life Digital LCD display provides clear, easy to read measurements Small push pull power tester with automatic backlight and buzzer alarm for quick reliable operation Applications and use scenarios - Used in electronic equipment, construction hardware, light industry, textiles, auto parts, ignition devices such as lighters, and fire equipment including pen, lock, fishing gear - Also suitable for chemical industry, machinery and scientific research facilities - Use scenario 1: in electronic repair and assembly to verify power connections quickly and accurately - Use scenario 2: on factory floors to test power continuity in machinery and parts under dim lighting, aided by the backlight - Use scenario 3: in labs and workshops to test ignition devices and other safety related equipment with audible indication