Fast and accurate line alignment Supports on-off detection, clear network cable short circuit, open circuit, crossover and other conditions, easy to detect cables, troubleshoot fault points, and intuitively display on the LCD display. Length test Insert and test the length of cable, Supports cable length test within the range of 1m-250m, one-click detection of cable length, fast and convenient. Line search test, digital signal line search Single-ended test Quickly detect whether the internal contact of the crystal head is good Use cable to connect the PoE device to the host, you can quickly identify whether the device is a standard PoE device, and display parameters such as the number of power supply cores, voltage, and device standards, so that the device status is clear at a glance. Name:Network Cable Tester Function:single-ended test; line hunting test; length test; line test; POE identification Colour:Black Material:Plastic Package Contents: 1 * Network Cable Tester Kit 1 * Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.