The DLRO100 series of 100 A portable micro-ohmmeters enable low resistance measurements across multiple applications, including in areas without access to mains power. The integral Li-ion battery supplies a constant 100 A current for up to 200 automatic or manual tests, enhancing productivity in remote locations.


With a focus on user safety, the advanced design features of the DLRO100 series also ensure the safe operation of the instrument in the most adverse conditions, including a CAT IV 600 V safety rating in accordance with IEC61010. A DualGround feature is available on the DLRO100X and DLRO100H models, which gives you additional safety by grounding both sides of the breaker under test. What's more, the tough design, intuitive interface, and IP54 (lid open) rating ensure reliability and ease-of-use even in the most arduous of conditions.


There are 3 main models in the series, each with a mains and battery variant:

  • DLRO100E and 100EB: E is mains only, EB is battery and mains. 
  • DLRO100X and 100XB: X is mains only, XB is battery and mains. DualGround capability with optinal clamp and internal memory storage with USB drive download.
  • DLRO100H and 100HB: H is mains only, HB is battery and mains. DualGround capability with optinal clamp and internal memory storage with USB drive download. Remote control, asset tagging, and Bluetooth®.

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