This instrument is a multi-functional handheld cable testing tool. It has wide application with reinforced cable types and multiple functions. It is a necessary testing tool for telecommunication engineering, wiring engineering and network maintenance person.
Features: Works perfectly when RJ11 RJ45 cable is on power. Trace RJ11, RJ45, cables or other metal wire (via adapter). Easy and fast to locate the breakpoint without opening the wire's cover. Network cable collation: judge short-circuit, breaking circuit, open circuit and crossing. Test line level, positive and negative polarity. Status of telephone line checking: test the working status of telephone line(idle, ringing, and off-hook) and judge TIP and RING line. Check wire continuity.