Standard duplex LC connector, bend-insensitive single-mode 9/125 fiberDuplex clips are easy to insert when holding the connectors together100% functional test to ensure performance and integritySingle-mode 9/125 fiber for testing applicationsType: Loopback moduleTest wavelength: 1310 and 1550 nmFiber: Single mode 9/125Connector: LC/UPCInsertion loss: typical: less than or equal to 0.20dB maximum: less than or equal to 0.30dBRepeatability: less than or equal to 0.10dBInterchangeability: less than or equal to 0.20dBDurability: less than or equal to 0.20dB typical change, 1000 plugsWorking temperature: -20 to +70 degreesStorage temperature: -40 to +85 degreesApplication: fiber laboratory, telecommunication test, FTTX test, patch panel application, equipment interconnectioncolour: black + blueMaterial: plasticPackage Contents:2 x Loopback AdapterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.