Network transceiver module MikroTik S-85DLC05D SFP LC 850 nm 1250 Mbit/s 550 m

S-85DLC05D is a 1.25G SFP transceiver operating at 850 nm with a Dual LC connector, designed for multimode fiber links up to 550 meters. The module supports Digital Diagnostic Monitoring (DDM) and provides a standard SFP interface with a maximum data transfer rate of 1250 Mbit/s. It is compatible with a range of MikroTik devices and can also interoperate with non‑MikroTik SFP ports.

Advantages

The MikroTik S-85DLC05D offers a compact SFP form factor with DDM support for link diagnostics and operational monitoring. Its 850 nm wavelength and Dual LC connector make it suitable for short-range multimode fiber runs up to 550 m while maintaining a standard 1.25G data rate. Tested compatibility with multiple MikroTik router and switch models ensures straightforward deployment in existing MikroTik networks.

Suitable for

• Short-range multimode fiber links (up to 550 m)
• 1.25G SFP ports on switches and routers
• Network equipment requiring DDM diagnostics
• Replacement or upgrade of existing SFP fiber modules

Key specifications

• Model: S-85DLC05D
• Interface type: SFP
• Data rate: 1.25 Gbit/s (1250 Mbit/s)
• Wavelength: 850 nm
• Connector: Dual LC
• Maximum reach (multimode): up to 550 m
• Features: DDM (Digital Diagnostic Monitoring)

How to use

Insert the S-85DLC05D module into a compatible SFP slot on your switch or router until it seats securely. Connect multimode fiber with Dual LC connectors to the module. Ensure the remote end uses a compatible SFP transceiver and that both ends support the same speed and fiber type. Verify link status and DDM parameters via your device management interface after connection.

Usage recommendations

Use multimode OM1/OM2/OM3 fiber appropriate for 850 nm transmission and keep fiber connections clean. Confirm device compatibility lists (tested MikroTik models include RB260GS, RB2011LS, RB2011LS‑IN, RB2011UAS‑IN, RB2011UAS‑RM, RB2011UAS‑2HnD, RB2011UAS‑2HnD‑IN and CCR1036‑12G‑4S) and perform link tests after installation.