What is the Sandstone TOM-MR-D52-LR2-ST?
The Sandstone TOM-MR-D52-LR2-ST is a SFP optical transceiver module, listed by the manufacturer as "Infinera Compatible Multi-Rate DWDM SFP, 1000BASE-ZX, OC48-LR2, 100M-2.7Gbps, 1535.82 nm, CH52, 80km SMF LC, DDM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.