The Cudy MC100GSB-20A is a Gigabit Ethernet media converter supporting 10/100/1000M speeds, designed for inter-building or long-distance industrial control needs. With a single fiber cable and single-mode BIDI structure, it enables connection between two points using only one fiber cable. This model offers fiber transmission distance up to 20 km, serving as a reliable bridge in wide area networks. Technical highlights include a 1.25 Gbps SC fiber port and a 10/100/1000 Mbps compatible RJ-45 copper port. Operating at 1310nm (TX) and 1550nm (RX) wavelengths, it supports full and half duplex modes. With 9 KB jumbo frame support and 2 Mbit data buffer, it provides high-performance data transmission. LED indicators (FP, TP, Link/ACT, FDX, PWR) allow easy network status monitoring. This media converter is ideal for campus networks, factory automation, security camera systems, and converting Ethernet connections between remote buildings to fiber optic infrastructure. The MC100GSB-20A must be used paired with an MC100GSB-20B on the opposite end. This allows you to extend your existing copper network with fiber optic cables for uninterrupted, high-speed communication over longer distances. Technical Specifications: - Standard: 10/100/1000 Mbps Gigabit Ethernet - Fiber Port: 1x SC, 1.25 Gbps - Copper Port: 1x RJ-45, 10/100/1000 Mbps - Fiber Type: Single Mode, BIDI - Range: 20 km - Wavelength (TX/RX): 1310nm / 1550nm - Operation Mode: Full and Half Duplex - Jumbo Frame: 9 KB - Power Supply: DC 5V / 1A - Indicators: LED (FP, TP, Link/ACT, FDX, PWR)