5 fixed resistance values Check the measured value display of earthing clamps immediately. Adjust C.A 6416, C.A 6417 and C.A 6418 earthing clamps in the event of deviations without sending them to the factory. https://elecena.pl/product/24346745/p01122301-calibration-loop-cl1 2023-10-14 https://elecena.pl/product/24346745/p01122301-calibration-loop-cl1 2024-01-16 https://elecena.pl/product/24346745/p01122301-calibration-loop-cl1 2025-04-07 https://elecena.pl/product/24346745/p01122301-calibration-loop-cl1 2026-02-07