Engineered for precision in fiber optic diagnostics, this optical fiber identifier from Jonard Tools is a must-have for professionals in the telecommunications field. Its user-friendly design features a single-button operation and a clear display that shows the relative core power, making it easy to obtain accurate measurements. Equipped with a sunshade, this device ensures that external light does not interfere with readings, while the included adapters accommodate various cable sizes, including 3 mm, 2 mm, 900 nm, and 250 nm. Additionally, with an insertion loss of 0.8 dB at 1310 nm and the ability to identify traffic direction and frequency tones audibly, this versatile tool is invaluable for efficient network management and fault identification in fiber optics.