The OFI-400 Series Optical Fiber Identifier from AFL represents a robust solution for professionals in the fiber optics industry, equipped with advanced features for precise operation. It effectively detects directional traffic along with various tones, including CW and frequencies of 270, 330, 1000, and 2000 Hz, making it adept at identifying signals in diverse settings. This model incorporates a built-in power meter with a Set Reference feature, which enhances its usability, while the unique optical head with a two-position plunger accommodates multiple fiber types without the need for adapters. Designed for durability and user-friendliness, the lightweight identifier is powered by standard AAA batteries, allowing for thousands of tests before needing a replacement. Its rugged construction ensures reliable performance in various environments, backed by a generous 5-year warranty and a recommended calibration interval of three years. Whether for splicing, testing, or locating, the OFI-400 Series stands out as a versatile and dependable tool for fiber optic technicians.