UNI-T UT273 is a clamp-shaped grounding resistance tester designed for swift, safe, and easy measurement of grounding systems without cutting off the ground lead or using an auxiliary electrode. It features automatic shutdown, self-alignment, backlight, data retention, data save and access functions. It measures grounding resistance, current, and frequency with high accuracy and resolution. Its applications include grounding resistance measurement of electrical equipment in power, telecommunication, meteorology, oil, construction, and industry.