suitable for searching for network cables, telephone lines, video cables, automotive circuits and metal cables without strong current.Network connection the double sided network line continuation light can more directly and easily check and correct if the network line continuation connection is correct. It has other useful functions, including continuity testing, network cable sequence compilation, interruption/short circuit test and DC level testing.How to use: 1. Search cables on all types of connected Ethernet switches/routers/PC terminals. 2. Quickly pull out the target wire from a lot of wire. 3. Compare the volume of the "tout" sound and the brightness of the signal display. Then you will find the target cable with the highest volume and the brightest display.Multiple Cables Tracking With this tracker you can track many types of cables, including phone cables, computer network cables, TV cables and other weak power cables.Package Type 1 x RJ11 adapter cable, 1 x RJ45 adapter cable, 1 x earphone, 1 x instruction 1 x bag.