The OFI-3 Optical Fiber Identifier is a portable and cost-effective fiber optic testing tool designed to detect optical signals and live fiber traffic without disconnecting the fiber or interrupting network services. It helps technicians quickly identify active fibers during installation, maintenance, and troubleshooting.

Compatible with multiple fiber sizes, the OFI-3 supports 0.25 mm bare fiber, 0.9 mm buffered fiber, and 2/3 mm jacketed fiber, making it a reliable solution for telecom and FTTH field applications.