This document provides specifications for the CWDM-SFPGE-1491 optical transceiver module. It operates at 1 Gbps with a transmission distance of up to 80 km on single-mode fiber. The module has an LC connector, works at a center wavelength of 1491 nm, and has an operating temperature range of 0°C to 70°C. It also lists the optical power, sensitivity and other performance parameters. More information can be obtained by contacting the supplier.