Mikrotik S-3553LC20D Two SFP (1.25G) module kit

The MikroTik S-3553LC20D module kit is intended for high-speed fiber links where an ordinary pair of modules won’t suffice or when you want full duplex on a single fiber strand (BiDi). The kit includes two matched SFP transceivers, one transmitting at 1310 nm and receiving at 1550 nm, and the other vice versa, enabling a single-fiber link up to 20 km over single-mode cable while achieving 1.25 Gbps throughput. With LC single-fiber connectors and support for Digital Diagnostics Monitoring (DDM), it provides an efficient and monitored solution for network uplinks, backhaul connections, or long-distance links between switch stacks or data closets. The wide operating temperature range (−40 °C to +70 °C) and low power consumption make this kit suitable for industrial or telecom-environment applications as well. Compatible with MikroTik’s RouterBOARD hardware and many other SFP-capable network devices, the S-3553LC20D offers a flexible option for future-proofing your fiber infrastructure.