Quickly detect data line anomalies. Qui of data line on and off: the light is on when the power is normal, and when the light is off, the power is abnormal.The board is small, light and easy to carry.All 4 indicator lights are on, then the data line is normal (double-head type-c data line requires all 5 indicator lights to be on).If VCC or GND is not lit, it indicates that the charging function of the data line is abnormal. D+ or D- is off, indicating that the data nsmiion function is abnormal.CC is dedicated to double-head type-c data line . When testing other data lines, the light will not turn on.Working power:DC 5V(TYPE-C Input)Working current:10-20MAModel :UD11A03 (compatible with DT3)Weight:12.7gInstruction of The :1. the Type-c charging cable to plug into the Power-IN interface to supply power to the board.2. Insert one end of the data cable to be d into the corresponding input port, and the other end into the corresponding output port.3. Observe the indicator light.Indicator light descrtion:1 D+, D-, VCC, GND indicator lights are on, indicating that the data line has data nsmiion function.Notice:During the test, except for the Power-IN port, the input and output ports of the test data line, other ports cannot be connected to the data line, otherwise the test result will be affected.Colour:BlackMaterial:+MetalPackage Contents:1 * USB Cable Only the above package content, other products are not included.Note: Light reflection and different displays may ca the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.