What is the Sandstone SFP-1G-LH-ST?
The Sandstone SFP-1G-LH-ST is a SFP+ optical transceiver, listed by the manufacturer as "Cisco Compatible Multi-Rate SFP+, 10GBASE-LR, LX, 1G-10G, 1310 nm, 10km SMF LC, DOM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.