Features Single mode: It is mainly used to compensate for the blind spots of OTDR testing, suitable for single-mode cables at 1310nm and 1550nm. Pop-up cover: just press to open the cover, then remove the jumper wire and use it, press again to close the cover, avoiding mess! MULTI-PURPOSE - OTDR launch cable is used to measure the loss and reflectivity of near end connections, as well as to remotely insert lossless fiber optic lines. Standard Connector This OTDR extension cable has a standard SC UPC to LC APC connector, which ensures easy connection. Compact and portable: there is no fusion joint in the middle of the optical fiber, which is small in size, light and easy to carry. 1. Single mode: mainly used to compensate for the blind spots of OTDR testing, suitable for single-mode cables at 1310nm 1550nm. 2. Pop-up cover: just press to open the cover, then remove the jumper wire and use it, press again to close the cover, avoiding mess! 3. MULTI-PURPOSE - OTDR launch cable is used to measure the loss and reflectivity of near end connections, as well as to remotely insert lossless fiber optic lines. 4. Standard Connector This OTDR extension cable has a standard SC UPC to LC APC connector, which ensures easy connection. 5. Compact and portable: there is no fusion union in the middle of the optical fiber, which is small in size, light and easy to carry. Specification: Item Type: OTDR Launch Cable Box Material: ABS Model: AUA 20 Connector: SCUPC to LCAPC Single Mode How to use: Press to open the cover up, then remove the bridge and use it. After use, rewind the bridge back and press again to hide it and avoid mess. Packing List: 1 x OTDR Launch Cable Box 2 x accessories. 1 x lanyard. Note: Most cable lengths of the product are bare fibers and cannot be removed. Only about one meter of interface glue fibers remains at both ends. Package List 1 x OTDR Launch Cable Box 2 x Accessories 1 x Lanyard