Brand new Multi function Cable Tester ** NS-468 Double-use Network Cable Tester Technical Guideline: TEST CABLE:RJ11RJ12RJ45,UTPSTPFTP POWER SUPPLY:DC 9V reduplicated battery ELECTRICITY-CONSUMING:20MA BULK:10.5*10.5*2.6 mm WEIGHT:200G The 9 LEDs is used to test Cable discontinuity, short circuit and wrong connection, Including one master & one remote unit it can test cable up to 1000 ft by using the remote unit Free 9V Battery with Buy now