Digiwave DGTCT04 is a 4-Way Coaxial Cable Mapper designed to find and identify multiple coax cables. It s a hand-held device designed for CATV and security system installers who test multi-run coax systems terminated with F-connector or those who wish to map runs to a central bundle. It can be used to put a tone signal on a coax cable as well as find and identify multiple coax cables connected to a coax splitter. With four serial-number remote terminators it is ideal for mapping coax installation.