The MikroTik S-31DLC20D is a 1.25G SFP transceiver designed for single-mode fiber connections up to 20 km. It features a Dual LC UPC connector and supports Digital Diagnostics Monitoring (DDM) for real-time monitoring of temperature, power consumption, and optical levels. With an operating temperature range of -40°C to +70°C, it performs reliably in harsh environments. Tested with MikroTik devices, it is also compatible with other standard SFP equipment.