Product Specification This cable tracker is designed to identify and trace wires or cables without damaging the insulation, you can also use it in checking for short circuit and locating open circuit and so on. In addition, it can also be used to identify some states of telephone line so that it is more convenient to install,debug,and maintain telephone lines, There are a Sender and a Receiver included in the instrument. Provides an adjustable volume control Compatible with all common tracing tone sources Easy cable connection with either RJ-45 jack, patch cord, or alligator clips Testing Continuity of the wire cableIdentify and trace wires or cables without damaging the insulationIdenrifying Line Condition(Clear,Ringing,Busy)Identifying Tiip and Ring on Telephone LineSolid Tone or Dual alternatiing Tone OutputCompatible with all common tracing tone sourcesEasy cable connection with either RJ-45 jack, patch cord, or alligator clipsUp to 100 hours of Use Shipping Policy: UPS and USPS is our shipping carriers. Most orders will be shipped the same day as long as they’re received before 11AM PST. Shipping time, methods and costs vary depending on your location and the weight of the product, however shipping cost can be calculated on our website checkout page automatically if you add the product to the shopping cart. For some custom made and special order items, it may take more one business days to be shipped, and buyer can check the real time order status by logging into their online account and receive e-mail notifications on the order. No orders will be processed and shipped during weekends and national holidays. If you have a Military APO/FPO address or P.O.Box, please choose USPS Priority Mail as your shipping method option Return Policy All sales are considered final, and no refunds or exchanges will be accepted. All defective items must be noticed within 7 days after received. Buyers need to return the defective item for the replacement at his own cost. Item must be original condition. Powered by eCRATER . List your items fast and easy and manage your active items.