What is the Sandstone XCVR-A00D49-ST?
The Sandstone XCVR-A00D49-ST is a SFP optical transceiver module, listed by the manufacturer as "Ciena Compatible 1G CWDM SFP, 1000BASE-EZX, 1490 nm, 100km SMF LC, DDM, I-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.