What is the Sandstone FOFL-DW55-PTSI9?
The Sandstone FOFL-DW55-PTSI9 is a network/telecom equipment component, listed by the manufacturer as "OADM Flat Filter, 1 channel DWDM channel 55, 1533.47 Industrial Temperature, Pigtail/Splice-On with East/West Configuration". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.