LevelOne 1.25Gbps Single-mode SFP Transceiver, 80km, 1550nm. SFP transceiver type: Fiber optic, Maximum data transfer rate: 1250 Mbit/s, Interface type: SFP. Country of origin: Taiwan, Compatible products: GSW-2453 GVT-4000, Certification: Class 1 Laser: EN60825-1 FDA 21: 1040.10, 1040.11. Input voltage: 3.5 V, Maximum voltage: 6 V, Maximum current: 0.3 A. Width: 55.5 mm, Depth: 13.5 mm, Height: 11.7 mm. Number of products included: 1 pc(s), Package width: 153 mm, Package depth: 51 mm