The GB20SFA model operates at a speed of 1000 Mbps. It utilizes a single-mode fiber (SMF) medium with a wavelength of 1310nm for transmission and 1550nm for reception. It is designed for a maximum distance of 20km. The connectors used are LC type. The transmitter power ranges from -3 to -8 dB, while the receiver power is less than -23 dB. The operating temperature range is from 0 to 70°C.