The GB40SFA model operates at a speed of 1000 Mbps. It utilizes a single-mode fiber (SMF) medium with a transmission wavelength of 1310nm and a reception wavelength of 1550nm. This model is capable of transmitting signals over a maximum distance of 40km and uses LC connectors. The transmitter power ranges from -3 to +2 dB, while the receiver power is less than -23 dB. The operating temperature range is from 0 to 70°C.