MikroTik SFP Transceiver S-31DLC20D, SM, 20km, 1.25G The MikroTik S-31DLC20D is a 1.25G SFP transceiver with a dual LC connector and a wavelength of 1310nm. The transceiver enables connections of up to 20km in single mode and supports DDM (Digital Diagnostics Monitoring). The mini GBICs have been tested and approved for the following MikroTik devices: https://elecena.pl/product/18862591/s-31dlc20d-mini-gbic-1000base-lx-singlemode 2021-06-19 https://elecena.pl/product/18862591/s-31dlc20d-mini-gbic-1000base-lx-singlemode 2023-02-03