This instrument is a multifunctional handheld cable testing tool. Work perfect when RJ11 RJ45 cable is on power. It has a 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:Wire tracing Trace RJ11, RJ45, cables or other metal wire (via adapter). Easy and fast to locate the breakpoint without opening the cover of wire.Network cable collation: judge short-circuits, breaking circuit, open circuit and crossing.Test cable 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.This handheld cable testing toolcan check wire continuity.Specification:Brand: BSIDEModel: FWT11Material: ABSType: Measuring instrumentsPrimary functions: Wire Line Finder TrackerScope of application: Education,Home ,appliance,Industrial,Market,OfficeOperating temperature: 0 - 40, max. 80 %relative humidity (non-condensing)Storage temperature: -10 - 50,max.80 percent relative humidity (non-condensing)Altitude: <2000mAnti-explosion rating: IP40Distance of emitting signal: 300m or soEmitter battery: 6F22 / 9V (not included)Receiver battery: 6F22 / 9V (not included)Color: blueEmitterSize: 20*4*2.9cm/7.9*1.6*1.1inReceiverSize:12.5*6.5*3.2cm/4.9*2.6*1.3inWeight: Approx.252g/8.9ozPackage list: 1 x FWT11 Emitter (battery not included) 1 x FWT11 Receiver(battery not included) 1 x Clip Adapter Cable 1 x RJ45 Adapter Cable.