1. This instrument is a multi-functional handheld cable testing tool. It has wide application with reinforced cable types and multiple functions. 2. It is a necessary testing tool for telecommunication engineering, wiring engineering and network maintenance person. 3. Work perfect when RJ11/RJ45 cable is on power 4. Wire Tracing: Trace RJ11, RJ45, cables or other metal wire (via adapter). 5. Easy and fast to locate the break point without opening the wire's cover. 6. Network cable collation: Judge short-circuit, breaking circuit, open circuit and crossing. 7. Test line level, positive and negative polarity. 8. Status of telephone line checking: Test the working status of telephone line (idle, ringing, and off-hook) and judge TIP and RING line. 9. Check wire continuity.
