UNI‑T UT620C+ Digital Micro‑ohmmeter, 4‑Wire DC Low Resistance Tester

Product Details

The UNI‑T UT620C+ is a high‑precision portable micro‑ohmmeter adopting four‑wire measurement method. It covers resistance measurement from micro‑ohm up to mega‑ohm range, delivering stable and accurate low‑resistance test results. Designed for on‑site inspection and maintenance of heavy‑duty equipment, this unit is widely adopted in new‑energy vehicles, power distribution, telecommunication, petrochemical and industrial grounding systems. It is ideal to test motor winding resistance, stator resistance and welding joint resistance for hybrid & electric vehicles, as well as contact resistance of cables, switches and connectors.

Key Features

✅ 4‑wire test method eliminates lead resistance error for accurate low‑resistance reading

✅ Wide measuring range: **0.001mΩ ~ 300.0kΩ**, maximum resolution up to **1μΩ**

✅ High accuracy: **±0.1%FS**, max test current ≤1A

✅ 500 groups internal data storage; Type‑C USB interface for data upload & PC software support

✅ Large backlit segment LCD display; data hold & zero adjustment function

✅ 3.7V 3200mAh rechargeable lithium‑ion battery; 15‑minute auto‑power‑off for longer standby

✅ IP54 dust‑water resistant housing; compact lightweight design, easy for field‑carrying

✅ Input protection ≤36V AC/DC; certified with CE & RoHS.

Technical Specifications