S-31dlc20d is a 1.25g sfp transceiver with a 1310nm dual lc connector, for up to 20 kilometer single mode fiber connections, with ddm
units are tested and compatible with rb260gs,rb2011ls, rb2011ls-in, rb2011uas-in, rb2011uas-rm, rb2011uas-2hnd, rb2011uas-2hnd-in, and ccr1036-12g-4s. Units are compatible with non-mikrotik sfp devices as well.