The Triplett FOX Cable Tracing Kit is a handheld battery-powered device designed for testing and tracing RJ 11 cables. The kit includes a toner and a Gator Pulse/Warble feature, making it easy to identify cable paths and locate faults in your electrical system. Made by the trusted brand Triplett, this unit is a reliable tool for professionals in the electrical industry looking to efficiently diagnose and repair cable issues.