The connectivity test can be carried out, single cable, And can detect 5E, 6E Internet Network cable and telephone line wiring fault, open circuit,short circuit, including: connection, reverse connection and series wound Localization and connection / connection error.(But not for shielded cables, STP cable cannot work) And measuring cable length, and location of the specific location of open circuitshort circuit And the length of the cable dynamic calibration function, make the lengthmeasuring accuracy is as high as 97%. easy to use, large screen display the test results stick out a mile. And easy to carry, long battery life (50 hours of standby time). Automatic delay shutdown And there are no length measurement and matched pairs were inserted on distalrecognizer can, And cable location, 8 distal passive testing socket (identification number ID1-ID8) And the distal identification appliance audio prompt function, And self checking function, can automatically compensate the variation of the battery power, the influence of environmental temperature change Colour:Dark grey Material:plastic Size:18 x 8.2 x 3.8CM Package Contents: 1 x Network Wire Tester Only the above package content, other products are not included. Note: Light 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.