Network Transceiver DEM-311GT
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DEM-311GT
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D-Link DEM-311GT
Spesification Network Transceiver DEM-311GT
Reliable Gigabit Fiber Connectivity with Multimode SFP

The D-Link DEM-311GT 1000Base-SX Multimode SFP Transceiver is engineered to deliver secure, high-speed fiber connectivity for enterprise networks. Operating at 850 nm wavelength, it supports full-duplex Gigabit speeds over multimode fiber, with transmission distances of up to 220 meters on 62.5µm fiber and up to 550 meters on 50µm fiber. This makes it an excellent solution for connecting switches, routers, and servers across offices, campuses, and data centers.

Its LC duplex connector ensures reliable fiber connections, while compliance with IEEE 802.3z standards guarantees compatibility with industry-standard devices. The DEM-311GT is hot-pluggable, allowing easy installation and replacement without disrupting network operations. Built with a robust metal housing, it reduces electromagnetic interference (EMI) and enhances durability, ensuring stable performance in demanding environments.

Designed for scalability and flexibility, the DEM-311GT supports 802.3x flow control, operates at 3.1–3.5V with a maximum current of 300mA, and complies with Class 1 laser safety standards (EN 60825-1, FDA 21 1040.10 & 1040.11). Backed by D-Link’s 2-year warranty and free technical support, the DEM-311GT is a trusted choice for organizations seeking secure, high-speed fiber connectivity.

Category : Network
Brand : D-Link
Product : DEM-311GT
Description

Features – D-Link DEM-311GT

  • Gigabit Fiber Connectivity – Supports 1000Base-SX standard (IEEE 802.3z).

  • Long-Distance Transmission – Up to 220m (62.5µm fiber) / 550m (50µm fiber).

  • LC Duplex Connector – Reliable and secure fiber connections.

  • Full-Duplex Operation – Ensures maximum throughput and efficiency.

  • Hot-Pluggable Design – Easy installation and replacement without downtime.

  • Metal Enclosure – Reduces EMI and increases durability.

  • 802.3x Flow Control Support – Enhances network stability.

  • Voltage Range 3.1–3.5V – Efficient energy use with max current 300mA.

  • Class 1 Laser Product – Complies with EN 60825-1 and FDA safety standards.

  • 2-Year Warranty – Backed by D-Link with free technical support.

Features
D-Link DEM-311GT Specifications

D-Link DEM-311GT – SFP 1000Base-SX Multi-mode Fibre Transceiver

Overview

Product TypeSFP (Mini-GBIC) Transceiver Module
ApplicationGigabit Ethernet over multi-mode fiber
StatusLive Product
Warranty2-Year Limited Warranty
SupportFree Technical Support

General Specifications

StandardIEEE 802.3z 1000Base-SX
ConnectorDuplex LC
OperationFull Duplex
Flow Control802.3x support

Optical Characteristics

Fiber TypeMulti-mode fiber (62.5 µm / 50 µm)
Maximum DistanceUp to 220 m (62.5 µm), up to 550 m (50 µm)
Wavelength850 nm
Receiver Sensitivity-18 dBm (max)

Electrical & Physical

Support Voltage3.1–3.5 V
Max Voltage6.0 V
Max Current300 mA
Hot PluggableYes
Laser ClassClass 1 (EN60825-1 compliant)
EnclosureMetal housing (reduces EMI, increases durability)
Dimensions13.8 x 57.2 x 8.5 mm

Features

Feature 1High-performance 850 nm multi-mode SFP transceiver
Feature 2Supports Gigabit speeds with full duplex operation
Feature 3Compatible with D-Link Gigabit switches
Feature 4Hot pluggable for easy installation
Feature 5Metal enclosure for lower EMI and durability

Compliance

Industry StandardsIEEE 802.3z, EN60825-1, FDA 21 1040.10 & 1040.11
SafetyClass 1 Laser Product

Order Information

ModelDEM-311GT – SFP 1000Base-SX Multi-mode Fibre Transceiver
Related ModelsDEM-310GT (1000Base-LX SFP, up to 10 km)
Techical Information