What is the Sandstone DWDM-SFP-4294-ST?
The Sandstone DWDM-SFP-4294-ST is a SFP optical transceiver module, listed by the manufacturer as "Cisco Compatible Multi-Rate DWDM SFP, OC48-LR2, 100M-2.7Gbps, 1542.94 nm, CH43, 80km SMF LC, DDM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.