ET618 Cable Length Tester with Multimeter Function Cable Length Test: Compatible with metal cables that have at least 2 cores, including network cables, telephone lines, and BNC cables. This makes it suitable for a variety of cabling installations and maintenance tasks. RealTime Measurement: Provides realtime measurement of network cable length up to 400 m or 600 m, and detects short circuits and open circuits. Fast feedback helps identify wiring issues quickly. Noiseless Digital Tracking: Uses the latest digital noiseless tracking technology to deliver a smooth, reliable user experience. Particularly useful for computer network, telecommunication cable work, BNC cable installations, and other metal cable engineering tasks. Multimeter Function (Only ET618): Includes direct current measurement, resistance, continuity, diode, and temperature measurement for onsite electrical checks without needing extra tools. Use scenarios Data center and network installation: Verify Ethernet and BNC cable lengths during deployment, confirm continuity, and quickly spot potential faults to ensure correct cabling layouts and performance. Telecom and building infrastructure maintenance: Check telephone and telecom cabling for length accuracy, detect opens or shorts, and perform basic electrical checks with the integrated multimeter functions. Field troubleshooting and commissioning: Resolve cabling issues onsite by measuring DC parameters, resistance, and continuity, while also verifying cable length and integrity in a single instrument. Note: The multimeter functions are available specifically on the ET618 model.