COAX 4 ROOMS CABLE TONER TESTER TRACKER MAPPER CATV W/ CASE PERFECT VISION PVCM4 Ability to test multi-run coax cables terminated with F-connectors from a central source Find and identify multiple coax cables connected to a coax splitter allow you to trace up to 4 connections at a time from the main cable box Hand held tester is ideal for finding coax cable and mapping coax installations Maximum cable length that cable can be tested: 3000 ft ( 1000 meters )