Feature: 1. MAIN APPLICATION: OTDR launch cable box is mainly used to fill the blind spots in OTDR testing, for more accurate and reliable results. 2. EASY CARRYING: OTDR launch cable has a small size and being lightweight as well, can be easily carried for convenient use. 3. APPLICABLE SCENARIO: Suitable for single mode 1310nm, 1550nm fibers. Otdr fiber cables are used to measure the loss and reflectivity of near end connections, as well as to remotely insert lossless optical fiber lines using otdr. 4. EASY TO USE: By simply pressing the box, you can easily take and store the cables, very convenient to use. 5. ABS MATERIAL: Made of premium ABS material, the box is wear resistant, scratch resistant and weather resistant, withstanding different usage environments. Specification: Item Type: OTDR Launch Cable Box Mode: AUA 20 Material: ABS Connector: SCUPC SCAPC single mode. Package List: 1 x OTDR Launch Cable Box2 x Accessory 1 x Lanyard Note: Most of the product's wire lengths are bare fibers that cannot be removed, leaving only about one meter of interface tail fibers at both ends.