When the measured resistance is less than a few ohms, the resistance of the test lead and the contact resistance of the probe can not be neglected and timeless compared with the tested resistance. If the two-wire test method is still used, the test error will increase. At this time, Kelvin connection mode (or four-wire test mode) can be used for testing. ETA4550 uses Kelvin four-wire detection, Kelvin clamp, half of the clamp are insulated from each other, alligator clip connection, provides a larger opening, thicker conductor, also meet the passage of large current. 4mm standard banana plug can be used in 4-wire resistance measuring instruments such as micro-ohmmeter, desktop multimeter, battery internal resistance tester, etc. It can be easily used in production line, acceptance testing and other fields.

- 4-wire independent connection alligator clip, eliminating lead error

- The alligator clip provides a larger opening and can be easily clamped even with large screws.

- Standard plug compatible, 4mm full sheath safe banana plug

-Pay attention to workmanship, use mould pressing, details processing and strive for excellence