The document provides specifications for the CWDM-SFPGE-1531 optical transceiver module. It transmits at 1 Gbit/s over single-mode fiber at a center wavelength of 1531nm with a maximum transmission distance of 80km. Key specs include a maximum transmit power of 5.0dBm, receiver sensitivity of -28.0dBm, and operating temperature range of 0-70°C. The document contains details on part numbers, connectors, protocols, and contact information to purchase.