1310nm 40km 25G SFP28 ER Fiber Optical Transceiver operats at 1310nm over single mode fiber, it achieves a significant 40km reach, making it suitable for medium to long range network connections. The duplex LC/UPC connectors offer a reliable and stable link, with the UPC polish minimizing signal reflections. In telecommunication networks, it can efficiently transmit voice and data over long distances. For enterprises, it enables seamless sharing of business data between geographically dispersed offices. In research institutions, it facilitates the transfer of scientific research results. With the SFP28 form factor, the transceiver module can be easily integrated into existing network infrastructures, ensuring a smooth 25G data flow across the 40km span.