TP-Link ISM311LS Industrial Single-Mode SFP Module (1000Base-LX)

The TP-Link ISM311LS is a rugged, industrial-grade Small Form-factor Pluggable (SFP) transceiver module designed to extend fiber optic link distances across harsh environments. Compatible with single-mode fiber (9/125 µm), it transmits data at 1.25 Gbps over distances up to 20 km using 1310 nm wavelength. This module supports Digital Diagnostic Monitoring (DDM), allowing real-time access to critical optical parameters.

Built to comply with the SFP Multi-Source Agreement (SFP-MSA), the ISM311LS is hot-pluggable, ensuring easy integration and maintenance without networking interruptions. Engineered for extreme environments, it operates reliably within a wide industrial temperature range of -40°C to 85°C, making it suitable for factory automation, transportation networks, and outdoor installations.

Key Features:

• Single-mode fiber 1000Base-LX standard


• Maximum link distance: 20 kilometers


• Digital Diagnostic Monitoring (DDM) support


• Hot-pluggable SFP-MSA compliant form factor


• Extended industrial temperature range: -40°C to 85°C


• Low power consumption at 3.3 V supply voltage


• LC duplex connector (LC/UPC)


• Compact and durable design: 56.4 × 13.4 × 11.0 mm

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Included in the box: ISM311LS Module, Installation Guide

For additional support and product details, visit [TP-Link Official Site](https://www.tp-link.com) and [Omada Networks](https://www.omadanetworks.com/au/business-networking/omada-accessory-module-cable/ism311ls/).