DWDM-SFP-3190-120 Cisco 1Gb/s 1000Base-DWDM Single-Mode Fibre 1531.90nm 120km Duplex LC Connector SFP Transceiver Module

The DWDM‑SFP‑3190‑120 is a high‑performance optical transceiver designed for demanding enterprise and service‑provider networks that require reliable, long‑reach connectivity over single‑mode fiber. Engineered to meet Cisco’s rigorous standards, this compact module delivers seamless integration with existing infrastructure while providing exceptional signal integrity and low latency for critical applications. Its rugged construction ensures durability in harsh environments, and the duplex LC connectors simplify installation and maintenance. Ideal for expanding network capacity without sacrificing performance, this transceiver offers a cost‑effective solution for extending reach and enhancing bandwidth efficiency across metropolitan and regional links.