TP-Link ISM311LM – Industrial Gigabit SFP Transceiver Module, Multi-Mode, LC Duplex, 550 m, Extended Temperature Range

The TP-Link ISM311LM is an industrial-grade SFP (Small Form-factor Pluggable) transceiver module, designed to provide highly reliable Gigabit connections in critical environmental conditions. Unlike standard commercial modules, the Industrial series is built to withstand extreme temperature fluctuations, making it the ideal solution for factories, unheated logistics warehouses or outdoor surveillance systems. With a transmission range of up to 550 metres over multi-mode fibre, this module ensures minimal latency and maximum stability at the heart of industrial networks.

Key Benefits (Selling Points)

• Resistance to Extreme Temperatures: Designed to operate reliably within a critical temperature range of -40°C to 85°C. This feature is essential for equipment installed in industrial electrical panels or in weather-exposed enclosures.

• High-Speed Gigabit Transmission: Supports the 1000Base-SX standard, offering a speed of 1.25 Gbps, ensuring seamless communication between switches, servers or industrial controllers (PLCs).

• Multi-Mode (MM) Technology: Optimises infrastructure costs for distances of up to 550 m, utilising the 850 nm wavelength on multi-mode optical fibre, offering complete immunity to electromagnetic interference (EMI).

• Digital Diagnostic Monitoring (DDM): Includes support for DDM (Digital Diagnostic Monitoring) technology, allowing administrators to monitor critical parameters (temperature, voltage, optical power) in real time directly from the switch’s management interface.

• Hot-Pluggable Installation: The design allows the module to be installed or replaced without powering down the switch (hot-swappable), simplifying maintenance and eliminating network downtime.

• Industrial Metal Housing: Built with a robust metal housing that offers enhanced protection and efficient heat dissipation, ensuring continuous 24/7 operation in demanding environments.

Examples of Use

1. Production Halls: Connecting industrial switches in factories where residual heat and electrical noise from motors would affect commercial SFP modules.

2. Outdoor Security Systems: Ideal for connecting pole-mounted IP cameras in car parks or industrial perimeters, where equipment is exposed to sub-zero temperatures in winter and extreme heat in summer.

3. Industrial Data Centres: Facilitates high-speed connections between server racks in environments where air conditioning is not constant.

Technical Specifications

• Model: ISM311LM (Industrial Range)

• Standards: IEEE 802.3z, SFP MSA

• Interface: SFP (Small Form-factor Pluggable)

• Connector Type: LC Duplex

• Data Rate: 1.25 Gbps (Gigabit)

• Wavelength: 850 nm

• Fibre Type: Multi-mode (50/125 µm or 62.5/125 µm)

• Maximum Distance: 550 m (50/125 µm fibre)

• Operating Temperature: -40°C to 85°C

• Special Features: Hot-swappable, DDM support

Package Contents: 1 x ISM311LM Industrial SFP Transceiver Module, Installation Guide.

Why choose the TP-Link ISM311LM?

When the reliability of your network is directly affected by environmental conditions, the ISM311LM is the logical choice. It is a ‘hardened’ device that transforms fibre optics into a secure connection, immune to extreme heat and cold. By investing in TP-Link’s industrial technology, you reduce the risk of hardware failures and ensure the continuity of your business processes in all weather conditions.