METRAOHM 413, pluggable measurement lead, battery, operating instructions. Low-resistance measuring device METRAOHM 413. Overvoltage protection Signalling of external voltage: by LED, acoustic, measurement value Protection rating IP 65 Zero calibration of test leads Measurement range: 0.01 → 200 Ω. Digital low-resistance measuring device compliant with DIN VDE 0413 Part 4 and EN 61 557 Parts 1 and 4.