Pair of SFP modules, S-35LC20D (1.25G SM 20km T1310nm/R1550nm) + S-53LC20D (1.25G SM 20km T1550nm/R1310nm) Product code S-3553LC20D Mode SM Distance 20KM Data Rate 1.25G Connector LC Format SFP Suggested price $79.00 Mikrotik Zubehör SFP module S-35LC20D Mikrotik Zubehör SFP module S-35LC20D