Quick & Accurate Testing - Instantly checks network cables for Straight, Opens, Shorts, Crossover, Split Pairs, and Reversals. Perfect for diagnosing crimping errors. Multi-Function Compatibility - Works with RJ45, RJ11, RJ12, CAT5, CAT6, and UTP cables. Ideal for phone and LAN wire testing. Automatic Scanning - Features 8 LED lights that sequentially light up to show pin status. Plug and test with zero effort. Main + Remote Unit - Includes a compact main unit and detachable remote for easy storage and portability. Portable & Lightweight - Fits in one hand and slips into any bag. Take it anywhere for on-the-go troubleshooting. Battery-Powered - Runs on a 9V battery (not included). Ready to use once powered. Reliable After-Sales Support - Your satisfaction is guaranteed. Contact us within 18 months for expert assistance, troubleshooting, or replacement parts. Were committed to resolving any issues swiftly, so you can work with confidence.