This cable tester and tracker is developed with more functions. It has 3 main functions: wire tracer, cable fault locator, length tester. A practical tool for low voltage system installation and technicians maintenance of communication circuits and comprehensive wiring circuits. It is used widely in the fields like telephone system, computer networks and other metal lead circuits. Features: Measure length of network cable, coaxial cable, telephone cable and USB cable with three method (M-S, M-R and OPEN), capable to measure the cable at length of 1500m, and precision of measuring cable length and position of broken line is up to 98% Test open circuit, short circuit, cross connection, reverse connection, pairing connection and broken wire positioning for telephone cable, BNC cable and USB cable with M-S and M-R method visually display on LCD Perform crosstalk test on network cable for solving the potential problem of slow speed Quickly find the target wire or cable among the plenty of network cables, telephone cables, coaxial lines and other various kinds of wires Make accurate determination of open circuit position (left, right or middle) Perform cable tracking on exchanger or Router with power-on Low voltage prompt function is available in case of over low voltage on the main unit Featuring simple control, large screen display and open-and -shut test result Automatic delay power on-off and backlight function With Lighting lamp enables to use in a dark environment Remote identifier is not necessary to perform length measurement and pairing test Self-checking function and automatically compensate any change in battery capacity or ambient temperature Single chip computer software watchdog design and reliable operation Specifications: Display: Dot matrix 128 x 64 (effective visible area is 56 x 40mm) Testing and Detecting Cable types: STP/UTP 5E 6E network cable Telephone cable Coaxial cable USB signal cable Common metal wires connected with alligator clip Testing device interface: Main unit: RJ45 (M) RJ45 (S) Loop interface BNC connector USB B-type female interface Remote identifier: RJ45 RJ11 BNC connector USB A-type female interface Lenght measurement Range: 1~1200m Calibration precision: 2% (±0.5m, or ±1.5 feet); (calibration; cable>10m) measurement precision: 3%((±0.5m or ±1.5ft); (AMP, CAT5E, 6E cable material) Display unit: meter, inch, yard Lenght calibration: User may use a cable at a known length to set a calibration coefficient. Calibration length is over 10m Line sequence and cable failure positioning: used for Lind Finding two-core cable or cable with over two cores Line finding function: used for Lind Finding two-core cable or cable with over two cores Operating Environment Temperature: -10° ~ 60°C Humidity: 20% ~ 70% Power Supply: Master: 9V compound tandem cell Reciever: 9V compound tandem cell Overall dimensions Main tester: 185 x 80 x 32mm Reciever: 218 x 46 x 29mm Remote indentifier: 107 x 30 x 24mm Set Includes: 1 x Multipurpose Cable Tester 1 x Earphone 1 x far-end passive test jacks 1 x Receiver 1 x Carrying Toolkit Bag 1 x RJ11-to-Alligator Converter 1 x RJ45 Cable 1 x RJ11 Cable 2 x 9V Battery English User Manual