Maximize fiber capacity with the Ubiquiti UACC-CWDM-4 CWDM Mux Demux, available in 4-port and 8-port variants, a passive optical solution enabling efficient 1270–1330 nm wavelength routing over SMF-28e single-mode fiber with ultra-low insertion loss (<1.5 dB), 50 dB return loss, up to 500 mW power handling, LC/UPC connectors, and a durable 1U SGCC steel enclosure, delivering NDAA-compliant, high-integrity performance in temperatures from -30 to 75°C for cost-effective data center, telecom, and enterprise network expansion without installing new fiber, backed by a 1-Year Limited Warranty.