Feature: 1. EASY TO USE: Mainly used to compensate for the blind spot in OTDR testing, with no joints in the middle of the optical fiber. Small size, light weight, and easy to carry. 2. PRESS COVER DESIGN: Press to open the cover to remove the wire and use it. After using and rewinding, press again to conceal the cable and avoid clutter 3. SCOPE OF APPLICATION: Suitable for single mode cables at 1310, 1550nm; Otdr fiber optic transmission 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. ABS MATERIAL: OTDR launch cable box has a ABS shell that is wear and scratch resistant, ensuring a long service life. 5. APPLICABLE SCENARIO: Suitable for cable television networks, telecommunications networks, computer fiber optic networks, and optical testing equipment, etc. Specification: Item Type: OTDR Launch Cable Box Mode: AUA 20 Material: ABS Connector: SCUPC SCUPC single mode. Package List: 1 x OTDR Launch Cable Box2 x Accessory1 x Hanging Rope 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.