UNI-T UT347A Clamp Earth Ground Tester is a fast, reliable solution for measuring ground resistance without disconnecting grounding systems. Designed for electricians and maintenance professionals, it delivers accurate results with one-hand clamp operation, strong anti-interference performance, and clear digital display. Ideal for substations, lightning protection systems, telecom sites, and electrical installations, the UT347A improves safety, saves time, and boosts productivity—making it a smart choice for professional grounding tests.