DT3 USB Cable Tester Fast Detection of Abnormal Cable Lightning- Micro Type CFeatures: Quickly detect abnormal data lines.If the light is on,it indicates normal power on,and if it is not on,it indicates abnormal power on.Multi-level protection ensures the stability and safety of testing.Small and convenient,fast detection,easy to carry.After connecting the power supply from the power supply port,insert the test line into the corresponding input port. If the 4 lights are on,it means that the power is normal,and if they are not on,it means that the power is abnormal (if the double head type-C connection is normal,it means that the 5 lights are all on)Specification: Material:PCBMixed SizeColor:as the Picture ShowPackage Includes: 1 x USB Data Cable Test Board