LAN CABLE TESTER & LENGTH DETECTORSuitable for use with telephone, LAN network cabling, Adaptors for Cat.3 5 6 and 6a plus coax, Test for Open Circuit, Short Circuit, Jumper Wire and Cross Talk, Detects cable length with 95% accuracy, Easy to use with results shown on large clear display, Long battery life and with time out function to save power, Allows cable infrastructure to be tested by one engineer