What is the Sandstone 100-01426-ST?
The Sandstone 100-01426-ST is a XFP optical transceiver module, listed by the manufacturer as "Calix Compatible 10G XFP, 10GBASE-ER, OC192-IR2, STM64-S64.2b, 1550 nm, 40km SMF LC, DDM, C-Temp, RED Latch". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.