Lightwin 1.25G SFP Transceiver, 850nm, 550m, DDM, LC Duplex, Multimode, Industrial (LWO-SFP-85-SX 20U)

Network engineers deploying Gigabit Ethernet over multimode fiber in factories, warehouses, or outdoor cabinets need a transceiver that survives temperature swings and delivers consistent throughput. The Lightwin LWO-SFP-85-SX 20U is an industrial-grade SFP module built for exactly these environments, offering 1.25 Gbps data rate, 850 nm VCSEL optics, and a 550 m reach on OM1/OM2/OM3/OM4 multimode fiber.

Key specifications

• Data rate: 1.25 Gbps (Gigabit Ethernet)
• Wavelength: 850 nm (VCSEL laser)
• Maximum distance: 550 m over multimode fiber
• Connector: LC Duplex
• Fibre type: Multimode (OM1, OM2, OM3, OM4)
• Digital Diagnostic Monitoring (DDM): Yes
• Operating temperature: -40°C to 85°C (industrial grade)
• Hot-pluggable: Yes
• Standard: IEEE 802.3z 1000BASE-SX, MSA compliant
• Power consumption: < 1 W
• Certifications: RoHS, CE, FCC

Why choose it

This SFP module is engineered for harsh conditions. The industrial temperature range ensures reliable operation in unheated equipment rooms, outdoor enclosures, or manufacturing floors. DDM support lets you monitor optical power, temperature, and voltage in real time, enabling proactive maintenance. With broad MSA compliance, it works seamlessly with switches and routers from Cisco, Juniper, HP, Dell, and others.

Ideal use cases

• Industrial Ethernet networks in factories and process automation
• Outdoor wireless backhaul links over multimode fiber
• Enterprise campus distribution switches connecting to multimode backbone
• Surveillance and traffic management systems in extreme climates

Good to know

The module supports full-duplex communication and is compatible with standard multimode fiber patch cables with LC connectors. It is hot-pluggable, so you can insert or remove it without powering down the switch. For best performance, use OM3 or OM4 fiber to achieve the full 550 m distance; OM1 and OM2 will support shorter distances depending on link budget.