The Chauvin-Arnoux 7028TM Wire Mapper is a professional cabling tester and fault identifier on data, voice networks and installed links. Highly recommended for upgrading an existing network. Suitable for communications engineers, technicians, telecommunications teams looking for faults even for linemen and communications companies. Some of its key features includes the ability to cut, short-circuited, crossed or separated pairs, fix short-circuits between pairs, pair inversions and sheath or screen continuity; made with graphic backlit LCD display, created with protection or safety applications such as alert for services active on the cable and built-in sound frequency generator for locating and identifying cables.