Fluke 323 True RMS Clamp Meter delivers rugged reliable performance for general electrical troubleshooting and it is a good basic troubleshooting tool for commercial and residential electricians. It includes True RMS measurements, optimized ergonomics, and large display for efficient troubleshooting. It’s designed to perform in the toughest environments and provide noise-free, reliable results, so you can trust it to help you confidently diagnose problems almost anywhere. Use it to verify the presence of load current, AC voltage, and continuity of circuits, switches, fuses and contacts. Its slim, compact size and rugged design make it well suited for measuring current up to 400A in tight cable compartments. Features rugged, reliable basic True-RMS clamp meter for measuring current up to 400A, measures AC current to 400A, measures AC voltage and DC voltage to 600V, provides True RMS AC voltage and current for accurate measurements on non-linear signals, measures resistance to 4k? with continuity detection.