... .Humanized design Product photographs SML-8838 INFORMATIONProduct functions:1. Test the connect status of STP/UTP 5E /6E cable, telephone line ... length, length range 0-1200meters;4. Judge the open circuit point, and the net line crystal head open point ( left, right ... ,USB,BNC ports and alligator adapter cable with RJ11port;3. When the voltage is low, it can display low voltage;4. Automatically time ...