Fluke Networks CableIQ Qualification Tester - Speed Testing, Twisted Pair Cable Testing, VoIP Testing, Cable Length Testing, Cable Fault Testing, Fiber Optic Cable Testing, Cable Tracing, Coaxial Cable Testing, Wiremap, Cable Signal Testing, Continuity Testing, ... - Twisted Pair, Optical Fiber - Gigabit Ethernet - 10/100/1000Base-T, 1000Base-X - 4Number of Batteries Supported - AA - Alkaline: