The MikroTik S-C51DLC40D is an SFP CWDM transceiver module operating at 1510 nm wavelength, delivering 1.25 Gbps data rate over single-mode fiber up to 40 km. It features dual LC connectors, DDM/DOM support for real-time monitoring, and complies with SFP MSA standards. With low power consumption (0.8 W) and a wide operating temperature range (0°C - 70°C), it ensures reliable connectivity in demanding environments.