This is a multi function network cable tester kit for tracing RJ11, RJ45 and electronic cables. It supports the path, break, short circuit, and cross of LAN cable; and supports STP cable. With LED light and earphone function to make it easier to work in dark and noisy environments. Features: Network cable tracker is suitable for tracing RJ11, RJ45 and electronic cables, and it also supports wiremap function, PoE testing and TEL testing. Consists of a transmitter and a receiver, with adjustable sensitivity, LED indicator lights and short circuit prompt for more practical and safer use. Multi function testing mode: it supports the path, break, short circuit, and cross of LAN cable; and it also supports STP cable. PoE switch testing helps to identify which pins are providing power. Telephone line status detection can test polarity and status including idle, ringing, conversation. Against DC 60V voltage makes it safer to use. LED work light makes it easier to work in dark environment. Earphone function helps you to work well in noisy environment. Widely used in telecommunications network line engineering and routine maintenance work, computer network line engineering and other metal wire line engineering and maintenance work. Specifications: Color: Blue & Black Material: ABS Power Supply: 2 * 9V Laminated Battery (Not included) Applicable Network Cable: CAT5/ CAT6/ Telephone Cable Interface Withstand Voltage: 60V Wiremap Function: RJ45 Scanning Function: RJ45, RJ11 Sensitivity Adjustment: Support LED Light: Support Earphone: Support Package Size: Approx. 220 * 145 * 45mm / 8.66 * 5.71 * 1.77in Package Weight: Approx. 350g / 12.35lbs Package List: 1 * Transmitter 1 * Receiver 1 * RJ45 Adapter Line 1 * RJ11 Adapter Line 1 Pair of Alligator Clip 1 Pair of Earphone 1 * Tool Bag 1 * User Manual