Feature:1. [SCUPC to LCUPC Interface] This OTDR fiber test extension cable features an SCUPC to LCUPC single mode interface, ideal for single mode cables at 1310 1550nm wavelengths.2. [Compensate Blind Spots] Designed to compensate OTDR testing blind spots, this fiber optic launch cable allows for more accurate measurements.3. [Wide Purpose] The OTDR fiber launch cable can be used to measure loss and reflectivity of the near end connection, as well as non destructively insert the fiber optic line remotely.4. [Easy to Use] The cable box is equipped with a convenient press top design, allowing for easy retrieval and concealment of the jumper cable, preventing tangled cables.5. [Compact and Portable] With a compact size and lightweight design, this OTDR launch cable box is easy to carry and transport, making it a convenient tool for technicians and professionals.Specification:Item Type: OTDR Launch Cable BoxMaterial: ABSModel: AUA 20Connector: SCUPC to LCUPC Single Mode.Package List:1 x OTDR Launch Cable Box2 x Accessories1 x LanyardNote:Most of the wire lengths of the product are bare fibers and cannot be removed. Only about one meter of interface tail fibers are left at both ends.