RJ11 RJ45 Cat5 Cat6 Telephone Wire Network Tracker Tracer Toner Ethernet LAN Cable Tester Detector Line Finder Gadgets Details: This instrument is a multi-functional handheld cable testing tool. It has wide application with reinforced cable types and multiple functions It is a must-have test tool for telecom engineers, wiring engineers, network maintenance personnel and others Can be used in RJ11 telephone line or RJ45 network cable in the live working position of the search Test line level, positive or negative polarity Use the emitter to test DC level, positive or negative polarity in circuits Specification: Wire Tracing: 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 croing 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 Operating temperature: 0 ~ 40 degree Celsius, maximal 80% relative humidity (non-condensing) Storage temperature:-10~50 degree Celsius, maximal 80% relative humidity (non-condensing, battery not included) Altitude: