What is the Sandstone 280-0030?
The Sandstone 280-0030 is a SFP optical transceiver module, listed by the manufacturer as "Cyan Compatible 1G SFP, 1000BASE-LX, 1310 nm, 10km SMF LC, DDM, I-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.