The Triplett TDR100 is a compact, handheld Time Domain Reflectometer designed to accurately measure cable length and locate faults, breaks, or short circuits in power, telecommunication, and security cables. Utilizing advanced TDR technology, it evaluates various cable types with adjustable Velocity of Propagation (VOP) settings. Featuring a clear backlit LCD screen and built-in memory storage for pre-set and custom cable types, it is an essential diagnostic tool for electricians, network technicians, and installation contractors.