What is the Sandstone FOFL-DW4140-PTSI9?
The Sandstone FOFL-DW4140-PTSI9 is a network/telecom equipment component, listed by the manufacturer as "OADM Flat Filter, 2 channel DWDM channel 41-40, (1544.53 to 1545.32) Industrial Temperature, Pigtail/Splice-On with East/West Configuration". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.