Fluke Networks LinkIQ Industrial Ethernet Cable+Network Tester - Cable Testing, Network Testing, Wiremap, Open Circuit Testing, Short Circuit Testing, Twisted Pair Cable Testing, Crossed Pair Testing, Tone Detection, Split Pair Testing, PoE Testing, IP Testing, ... - USB - Network (RJ-45) - Twisted Pair - 10 Gigabit Ethernet - 10GBase-T - 3.6V - Battery Rechargeable - Lithium Ion (Li-Ion):