The hand-held TFS-1020 Optical Fault Finder offers an affordable way to determine optical fiber length or fault locations in fiber optic systems. By using optical time-domain reflectometer technology, the TFS-1020 can automatically calculate and display nominated and interval event lengths. Measurements up to 30 kilometers away can be made while reading up to 5 fault events. The TFS-1020 comes in an easy-to-transport compact size. The complete kit includes the TFS-1020 Optical Fault Finder, protective carrying case, optical fiber patchcord, 2 AA batteries, carrying strap and users manual.