The Finisar FTLF1319P1BTL is a high-performance Small Form-factor Pluggable (SFP) optical transceiver designed for use in 1G/2G Fibre Channel and Gigabit Ethernet (1000BASE-LX) applications. This module operates at a nominal wavelength of 1310nm over single-mode fiber (SMF), supporting data transmission distances of up to 10 kilometers. It is engineered with a dual data rate capability, providing reliable performance at both 2.125 Gbps for Fibre Channel and 1.25 Gbps for Ethernet protocols, making it a versatile component for consolidated networking and storage environments.The unit features a standard duplex LC connector and utilizes a Fabry-Perot (FP) laser transmitter. It is designed to operate over an extended industrial temperature range, ensuring stable performance in challenging environmental conditions. The transceiver fully supports Digital Diagnostic Monitoring (DDM) according to the SFF-8472 interface standard, allowing for real-time monitoring of optical output power, received optical power, laser bias current, temperature, and supply voltage. As a hot-swappable module, the FTLF1319P1BTL facilitates easy maintenance and system upgrades without requiring a reboot of the host device. It is compliant with the SFP Multi-Source Agreement (MSA) and meets Class 1 laser safety requirements.