Highlights: Identifies traffic direction and 270 Hz, 1 kHz, and 2 kHz frequency tones with audible warning LCD shows relative core power, signal direction, and battery life Built-in VFL helps locate faults in fiber cables quickly Integrated power meter measures power across six selectable wavelengths Reversible adapter supports 2 mm, 3 mm, 250 µm, and 900 µm fiber Independently tested to meet ETL Listed standards Features: Supports continuous wave signal identification Color display indicates signal direction Compatible with bare fiber applications Uses an InGaAs detector for optical signal detection Operates with two AA batteries Compact handheld design for field testing The Jonard Tools OFI-100 optical fiber identifier is a compact handheld testing device designed to identify optical signals, traffic direction, and common frequency tones during fiber maintenance and troubleshooting. It supports continuous wave signal identification across an 800 to 1700 nm wavelength range and detects 270 Hz, 1 kHz, and 2 kHz tones with an audible warning. Its LCD provides relative core power, signal direction, and battery life information, while the color display helps technicians interpret direction results clearly in the field. The fiber identifier uses a Ø1 mm InGaAs detector for optical signal detection and is compatible with bare fiber applications. An integrated power meter measures optical power across six selectable wavelengths: 850 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm, and 1625 nm. The built-in VFL helps locate faults in fiber cables quickly, supporting efficient inspection and troubleshooting. A reversible adapter works with 2 mm, 3 mm, 250 µm, and 900 µm fiber sizes, helping technicians test multiple cable types with one tool. Powered by two AA batteries, the device measures 9 in x 1 in x 2 in and weighs 0.59 lb for easy handling during field use. Independently tested to meet ETL Listed standards, The Jonard Tools OFI-100 optical fiber identifier supports practical fiber testing in a portable design. Specifications: Identified Wavelength Range: 800-1700 nm Identified Signal Type: CW, 270 Hz ±5%, 1 kHz ±5%, 2 kHz ±5% Detector Type: Ø1 mm InGaAs Adapter Type: Ø0.25 mm, Ø0.9 mm, Ø2.0 mm, Ø3.0 mm Signal Direction: Color display Signal Direction Test Range at 1310 nm: -46 to +10 dBm, CW/0.9 mm bare fiber Signal Direction Test Range at 1550 nm: -50 to +10 dBm, CW/0.9 mm bare fiber Signal Frequency Display: 270 Hz, 1 kHz, 2 kHz Insertion Loss for Ø0.25 mm and Ø0.9 mm: 1.0 dB Insertion Loss for Ø2.0 mm and Ø3.0 mm: 1.5 dB Power Meter Wavelengths: 850 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm, 1625 nm Battery Type: 2 AA Dimensions: 9 in x 1 in x 2 in (22.86 cm x 2.54 cm x 5.08 cm) Weight: 0.59 lb (267.86 g) Certification: ETL Listed UPC: 810053351529