Cisco SP-AR3-DWSM-SFP DWDM SFP 1540.56 nm | 24x7x4 Support — SP-AR3-DWSM-SFP

Keep wavelength-sensitive links on spec with a DWDM SFP built for dense optical transport environments. The Cisco SP-AR3-DWSM-SFP operates at 1540.56 nm, making it a fit for networks that depend on precise channel planning and disciplined optical design. Because this is a remanufactured module, it offers a practical path for extending the life of existing Cisco infrastructure without paying for a brand-new optic where that is not required. That can be especially valuable in environments where compatibility, procurement control, and lifecycle management matter as much as raw throughput. The 24x7x4 support designation adds another layer of operational confidence for teams that cannot afford long repair cycles. For production networks, that combination of optical specificity and support coverage helps protect service continuity while keeping replacement strategy aligned to budget and inventory goals. Ideal For Upgrading dense wavelength-division multiplexing links in a Cisco optical network Replacing a failed SFP in an existing transport environment Extending the service life of installed Cisco optics with remanufactured hardware Supporting production optical links that require rapid service coverage Why This Product 1 DWDM optic tuned to 1540.56 nm 2 Remanufactured for cost-conscious replacement 3 Cisco SFP form factor for compatibility 4 24x7x4 support for production environments