UNI-T UT521 a professional digital earth resistance tester. This device is primarily used to measure earth resistance in electrical power systems, lightning protection equipment, and various industrial grounding systems.
Measurement Ranges: Earth resistance across three manual ranges: 0–20Ω, 0–200Ω, and 0–2000Ω.
Earth Voltage: Measures AC earth voltage from 0 to 200V.
Data Management: Includes a Data Hold function and internal memory capable of storing up to 20 records.
Safety & Build: Features double insulation protection and is rated CAT III 600V.
Display: Equipped with a 2000-count LCD screen featuring an integrated backlight for use in dark environments.Power: Operates on six 1.5V AA batteries and includes an auto-power-off feature after 10 minutes to save battery life.