# MikroTik RouterBoard 1000BASE-EX SFP Module 1.25G SM 20km 1310nm DDM

- Canonical URL: https://www.netxl.com/modules/mikrotik-s-31dlc20d-sfp-module/
- Brand: MikroTik
- SKU / part number: S-31DLC20D
- EAN (GTIN-13): 5902560365986
- Category: Modules (https://www.netxl.com/modules/)

## Pricing (GBP, guest pricing — trade customers see account pricing via the API)
| Quantity | ex VAT | inc VAT |
| --- | --- | --- |
| 1+ | £26.24 | £31.49 |
| 5+ | £25.96 | £31.15 |
| 10+ | £25.68 | £30.81 |

## Availability and shipping
- Availability: Out of stock
- Shipping: Royal Mail Tracked - Next Working Day — £7.19, 1 working day(s)

## Description

The MikroTik S-31DLC20D is a 1.25G SFP transceiver, used to transmit and receive data with extremely high speeds over fibre optic cables. Featuring a 1310nm Dual LC connector, the S-31DLC20Dor can transmit data with a range of up to 20km, with Digital Diagnostics Monitoring (DDM) for real-time monitoring of the unit.

The MikroTik S-31DLC20D has been tested with the following models:

 RB260GS, RB2011LS, RB2011LS-IN, RB2011UAS-IN,  RB2011UAS-RM, RB2011UAS-2HnD, RB2011UAS-2HnD-IN, and CCR1036-12G-4S.

However, the S-31DLC20D is also compatible with non-MikroTik networking equipment.

## Key highlights

- Wavelength: 1310nm
- Distance: 20KM
- Mode: SM
- GigE Standard: 1000BASE-EX
- Data Rate: 1.25G
- Connector: Dual LC
- Format: SFP

## Programmatic access

- This page in HTML: append a trailing slash instead of `.md`
- NetXL Customer API (real-time customer pricing, stock, ordering): https://api.netxl.com — OpenAPI at https://api.netxl.com/openapi.yaml
- MCP server for AI agents: https://mcp.netxl.com
- Machine-readable site index: https://www.netxl.com/llms.txt
- API documentation: https://www.netxl.com/api-docs.md
