What it does
It’s used to test and diagnose Ethernet (LAN) cables quickly.
🧠 Main functions:
• ✅ Cable verification – checks if wiring is correct (open, short, crossed pairs)
• 📏 Cable length measurement – shows how long the cable is
• 📍 Fault location – tells how far the problem is (e.g. 12 meters away)
• 🔌 Service detection – detects if cable is connected to Ethernet, PoE, or phone line