Features:*High-Quality Material: This product is made of high-quality material, which is wear-resistant and durable, not easy to break, and can be used for a long time.*Multi-functional design: This cable tracking tester can determine whether the cable line is continuous, track the cable line, and identify the locations of the line break, etc.*Dual-port test: Quickly detect the crimping condition of the crystals head. It can also be used as a LAN-tester, or it can receive the audios signal in the cable line (telephones line) to determine the status of the working telephones line (idle, ringing, off-hook) )wait.*Easy to carry: This cable tracking tester is equipped with a storage bag, small and lightweight, easy to carry.*Battery powered: The cable tracking tester is powered by 2 9V batteries (not included), with long standby time, low energy consumption, and can be used for a long time.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurement Description:Material: ABSSize: As ShownAudios signal: 1.5kHZReceiving frequency range: 100HZ-300kHZSize: receiving end 238*43*26mm, transmitting end 145*35*25mmBatteries: 2 9V batteries (not included)Connector: RJ-11 (for telephones cable socket)Package List:1 set x Cable Tracking Device