Fibershot Fiber Identifier OFI-3 by STAR Infomatic is a reliable live fiber identifier that detects optical signals and traffic direction without disconnecting the fiber. Supporting 1310/1550 nm, multiple modulation frequencies, SM/MM fibers, and FC/SC/ST connectors, this portable fiber optic testing tool suits FTTH, telecom, installation, maintenance, and troubleshooting, with up to 30 hours of battery life in the field.