A 1.25G SFP (Small Form-factor Pluggable) module, BIDI (Bi-directional), operates at 1550nm wavelength and supports distances up to 3km using an SC port. This module is specifically designed for single-fiber communication, where both transmit and receive signals travel over a single strand of fiber. It’s suitable for applications requiring economical and efficient bi-directional data transmission over shorter distances, commonly used in telecom and enterprise networks.