Description:This professional telephone and network cable tracking system， consisting of receiver and emitter， enables you to find where a cable is laid and whether or not. -And， if so， whether there are any breaks points in the line. Features:?��Trace telephone wire/LAN cable?��Trace wire in electrical system?��Verify LAN cable condition?��Continuity test?��Low Battery Indication?��Bright white LED flash light?��Cable Assignment Test: Open， short and cross of LAN cable， 2-wire (RJ11)/4-wire (RJ45) Telephone cable?��Cable State Testing (2-wire)- Line DC detecting and anode， cathode determination- Ringing signal detecting-Open， short and cross test. Function:?��Find wire on all types of connected operating Ethernet switch /Router/PC terminal?��Rapidly find the target wire from among plenty of telephone wires?��Rapidly find the target wire from among plenty of network wires?��It can take place of cable tester?��Compare the volume of the"tout"sound and the brightness of the signal indicator， Then you can find the target wire which has the highest volume and brightest indicator Specification:?��Powered by DC 9V battery (for both receiver and emitter).(Batteries are not included)?��The max working current: emitter: <=10mA; Receiver: <=30mA?��Signal output electric status: 8Vp-p?��Signal transmission format: multi-frequency impulse?��Distance of signal transmission: >=3km?��Appearance dimension: 175*42*27mm(receiver); 126*49*34 (emitter)?��Color: Orange Package include:1x Cable Transmitter1x Cable Receiver/Tracker1x RJ45 Cable1x RJ11 Cable1x Cable with crocodile clamp1x Earphone1x Instruction manual1x Bag