Features Short-circuit/open-circuit detection and DC level testing function. Integrated wiring network engineering with building monitoring line maintenance. Equipped with RJ11 and RJ45 cables and with interface on the transmitter. Easy and fast to locate the breakpoint without opening the wire's cover. This is a multifunctional wire tracker, for telephone, network wire, power cable, etc.A great tool for telecommunication engineering, internet bar, network maintenance, etc. Specifications: Item Name: Wire Tracker Brand: MESTEK Model: WT58D Working Environment: 0℃ - 40℃, 20%-75%RH Storage Environment: -10℃ - 50℃, 10%-90%RH Altitude: ≤2000 meters Distance of Sending Signal: 0-300m Battery: 2x9V 6F22 (NotIncluded) Receiver: 190mm x 40mm x 23mm/7.48" x 1.57" x 0.91" (Approx.) Launcher: 140mm x 60mm x 25mm/5.51" x 2.36" x 0.98" (Approx.) Package list: 1 * Receiver 1 * Transmitter 1 * RJ11 Connecting Cable 1 * RJ45 Connecting Cable 1 * User Manual 1 * Line Finder Bag 1 * Pair of Earphones Notes: 1. Please note that there is NObattery in the package. 2. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. 3. Please allow slight dimension difference due to different manual measurement. Package List