... . Ordering information: Part Number Description DW-D12C61-80CG CWDM GBIC,1.25G,1610nm,SC,80km,0°C~+70°C ... DW-D12C59-80CG CWDM GBIC,1.25G,1590nm,SC,80km,0°C~+70°C ... DW-D12C57-80CG CWDM GBIC,1.25G,1570nm,SC,80km,0°C~+70°C ... SC,80km,0°C~+70°C DW-D12C61-40CG CWDM GBIC, 1.25G,1610nm,SC,40km,0°C~+70°C ... SC,40km,0°C~+70°C DW-D12C27-40CG CWDM GBIC,1.25G,1270nm,SC,40km,0°C~+70°C ...