The MikroTik S-C55DLC40D is a high-performance SFP transceiver module designed for long-distance fiber optic network connections. This compatible module supports high-speed data communication protocols such as Gigabit Ethernet (1.25 Gbps), serving as a reliable bridge between data centers and enterprise network infrastructures. With dual LC connectors and single-mode fiber (SMF), it provides stable and lossless signal transmission over distances up to 40 km. Its hot-pluggable design allows easy installation and replacement without interrupting the server or switch. The module's technical strengths include a transmitter operating at 1550 nm wavelength and a receiver covering a wide range (1270-1610 nm). With a minimum optical budget of 17 dB, it maintains signal integrity even in challenging environmental conditions, ensuring a maximum connection distance of 40 km. The DDM/DOM (Digital Diagnostic Monitoring) feature enables real-time monitoring of critical parameters such as temperature, optical power, laser bias current, and supply voltage, allowing proactive network management and early fault detection. With a commercial operating temperature range of 0°C to 70°C and low power consumption below 1 Watt, it offers energy efficiency and usability across a wide range of applications. The S-C55DLC40D is an ideal solution for inter-city Gigabit Ethernet backbone connections for Internet Service Providers (ISPs), campus-scale enterprise LAN networks, and redundancy links between data centers. Its compliance with the SONET OC-3/SDH STM-1 standard ensures reliable use not only in data networks but also in telecommunications infrastructures. Full compliance with SFP MSA (Multi-Source Agreement) standards guarantees seamless operation with MikroTik equipment and compatibility potential with a wide range of network hardware. Technical Specifications: - Product Type: SFP Transceiver - Compatibility: MikroTik Compatible - Data Rate: 1.063-1.25 Gbps - Connector Interface: Duplex LC - Fiber Type: Single-Mode Fiber (SMF) - Maximum Distance: 40 km - Optical Budget: 17-19 dB - Transmitter Wavelength: 1550 nm - Receiver Wavelength Range: 1270-1610 nm - Operating Temperature: 0°C - 70°C - Power Consumption: <1 W - Diagnostic Feature: DDM/DOM Support - Power Supply: Single +3.3V - Safety Standards: CE, RoHS Compliant