MikroTik SFP (1.25G) Module 20KM Single Mode (S-31DLC20D)

The MikroTik S-31DLC20D is a high-performance 1.25G SFP transceiver designed for long-range single-mode fiber connections. Equipped with a 1310nm Dual LC UPC connector, this module supports fiber links up to 20 kilometers, making it ideal for enterprise, ISP, and data center deployments.

It supports data transmission speeds of up to 1.25Gbps over single-mode fiber (SMF), with a reach of up to 20 kilometers, making it ideal for inter-building links, ISP backbone networks, campus networks, and enterprise fiber uplinks.

The module uses a 1310nm wavelength laser and a dual LC connector, ensuring stable and efficient optical communication. It is hot-swappable, allowing installation or replacement without shutting down network equipment.

It is widely compatible with MikroTik devices as well as other networking equipment that supports standard SFP ports, making it a flexible and cost-effective fiber solution.

Key Features:

• Speed: 1.25G (Gigabit)

• Wavelength: 1310nm

• Connector Type: Dual LC UPC

• Fiber Type: Single-Mode

• Distance: Supports fiber links up to 20KM

• DDM Support: Yes (Digital Diagnostics Monitoring)

• Plug-and-Play: Easy integration with MikroTik and compatible devices

Device Compatibility:
Tested and verified for use with:

• RB260GS

• RB2011LS / RB2011LS-IN

• RB2011UAS-IN / RB2011UAS-RM

• RB2011UAS-2HnD / RB2011UAS-2HnD-IN

• CCR1036-12G-4S
  Also fully compatible with non-MikroTik SFP-enabled devices.

Whether you’re expanding a network or upgrading fiber links, the S-31DLC20D offers reliable performance, easy deployment, and versatile compatibility in a compact SFP form factor.

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