Netlink HTB-GS-03 A/B Gigabit Fiber Optic Media Converter.
Here's some information about this product:
Functionality:
It converts optical Ethernet signals between a 10/100/1000M UTP (RJ45) interface and a 1000M optical fiber (SC port) interface.
Transmission:
It can extend Gigabit Ethernet over optical fiber for distances up to 20KM or 25KM, depending on the model and fiber type (single-mode).
Features:
It supports auto-negotiation for UTP ports, MDI/MDI-X auto-crossover, and has LED indicator lights for monitoring.
Applications:
It is suitable for enterprise LANs, CCTV, and industrial networks.