ETU-LINK 1G SFP is a gigabit small form-factor pluggable (SFP) optical module that supports protocols such as Fibre Channel, Ethernet, and SDH/SONET, enabling high-speed data transmission. It uses an LC duplex connector and supports common wavelengths such as 850nm, 1310nm, or 1550nm. The maximum transmission distance supported is 160 km, and it can be inserted into the SFP ports of optical switches, routers, servers, or other network devices.