Description: 100% Brand new and high quality! 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. Work profect when RJ11 RJ45 cable is on power 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 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. Specifications: Operating temperature: 0 °C ~ 40 °C, maximal 80% relative humidity (non-condensing) Storage temperature:-10~50°C, maximal 80% relative humidity (non-condensing, battery not included) Altitude: Anti-explosion rating:IP 40 Distance of emitting signal :300m or so Battery Emitter: 6F22/9V; receiver: 6F22/9V(not include) Color: Blue & black Package Includes: 1 x FWT11 Transmitter 1 x FWT11 Receiver 1 x Clip Adapter Cable 1 x RJ45 Adapter Cable 1 x User Manual