UT275 UNI-T Digital Clamp Earth Ground Tester, Earth Ground Resistance 0.01 to 1000Ohm, Leakage current (A) upto 30A, Resistance limit alarm, Auto range, Data recall, Auto calibration and 10000 display count etc. UT275 Clamp Earth Ground Tester UT270 series can quickly and safely measure the grounding system without disconnecting circuit ground lines or the need of auxiliary electrodes. It can measure resistance from 0.01Ω with a resolution of 0.001Ω. UT275 can also measure leakage current up to 30A. These clamps’double insulation design makes them durable tools for outdoor work and effective in blocking interference signals from the environment. Applications: Electric power, telecommunication, meteorology, oil field, building and industry 1. Resistance limit alarm 2. Auto range 3. Low battery indication 4. Data hold 5. Data recall 6. LCD backlight 7. Auto calibration SpecificationsRangeUT275 Earth Ground Resistance (Ω)0.01~0.099Ω±(1%+0.01) 0.1~0.99Ω±(1%+0.01) 1~49.9Ω±(1.5%+0.1) 50~99.5Ω±(2%+0.5) 100~199Ω±(3%+1) 200~395Ω±(10%+5) 400~590Ω±(20%+10) 600~1000Ω±(25%+20) Leakage current (A)0mA~299mA±(2.5%+2mA) 0.3A~2.99A±(2.5%+100mA) 3A~30A±(2.5%+300mA) Features Display count 10000 Jaw opening 28mm Auto power off √ Data storage 30