Automatically run all tests and inspections to find problem shorts, open wires, -wiring, and other wiring incidents. network cable tester, visible LED status display.<br> The easy-to-read LED display shows the problem. Handheld and easy to carry.<br> It is used to test your -made Ethernet wiring cable to make it works normally connecting to your device. Test RJ45 cables, RJ11 telephone lines and network cables.<br> A 9V battery is required (not included in the of supply). It is recommended to replace the battery.<br> Features:It can easily distinguish cable, continuity, open and short;Verify the cable continuity through the remote control kit, open, short wire and crossover wire pair up to 1000 feet (about 3.0 ).<br> specification:<br> Main test: -4-5-6-7-8-G<br> Remote control test:<br> -4-5-6-7-8-G ----RJ45<br> -4-5-6 ------------RJ12<br> 2-3-4-5------------------RJ11<br> RJ45 RJ11 -5 -6 cable test: power switch (S-level slow test, S-level fast test.) If all cables are available, the light will change from NO.1&2 to green. If any lights do not turn on or do not turn on continuously, the cable is broken.<br> The following is an abnormal connection:<br> If a cable, such as cable No. 3, has an open circuit, the two No. 3 lights of the main tester and the remote tester will not be to turn on. If multiple cables are not connected, multiple lights will not turn on separately.<br> If less than two cables are connected, no lights will appear.<br> If there is a fault at both ends of the cable, such as NO. 2 4, then display:<br> If the two cables are short-circuited, the corresponding lights will not turn on on the remote control, and the main tester will remain unchanged.<br> If cables, including cables, are short-circuited, the corresponding lights will not . If testing a terminal block or wall socket, connect two cables (RJ45) to the tester.<br> colour: yellow<br> Material: ABS<br> size: 104 x 97mm<br> Contents:<br> 1 * Yellow Network Cable Tester<br> Only the above content, other are not included.<br> Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.