MicroMapper™. Simple verification tester verifies wiremap and identifies faults with LEDs. Testing of twisted pair cables for open circuits, shorts, crossed pairs, reversed pairs and split pairs. Easy-to-read fault display. Tone generator for tracing installed cables hidden in walls, floors and ceilings. Remote unit enables one-person testing of installed cables. Whether you re an electrical contractor, a home networking professional, datacom specialist or IT/network manager, the Fluke Networks family of powerful Voice/Data/Voice (VDV) verification and troubleshooting tools will allow you to verify your work while delivering a quality installation. The MicroMapperTM is a small handheld cable tester which enables network professionals to quickly and easily verify the integrity of Ethernet twisted pair cabling