D‑Link  DEM-311GT Gigabit SFP 1000Base‑SX Multi‑Mode Fibre Transceiver LC Duplex, Up to 550m

Form factor: SFP module

Data rate: Up to 1,000 Mbps (1 Gbps) full‑duplex

Standard: IEEE 802.3z (1000Base‑SX)

Wavelength: 850 nm

Fibre type & reach: Multi‑mode fibre — up to approx. 550 m (50/125 µm), up to approx. 220 m (62.5/125 µm)

Connector: Duplex LC optical interface

Hot‑swappable: Yes

Power supply: 3.3 V DC typical, up to ~300 mA supply current

Housing: Metal enclosure (EMI‑reduction)

Operating temperature: 0 °C to 70 °C; Storage: ‑40 °C to 85 °C

Compliances: MSA‑compliant, RoHS‑compliant, Class 1 laser safety