... Product Description DW-S1253-40CG BIDI GBIC,1.25G,single fiber,1550/1310,SC,40km,0°C~+70°C DW ... -S1235-40CG BIDI GBIC,1.25G,single fiber,1310/1550,SC,40km,0°C~+70°C ... DW-S1253-20CG BIDI GBIC,1.25G,single fiber,1550/1310,SC,20km,0°C~+70°C ... DW-S1235-20CG BIDI GBIC,1.25G,single fiber,1310/1550,SC,20km,0°C~+70°C ... 70°C DW-S1235-03CG BIDI GBIC,1.25G,single fiber,1310/1550,SC,3km,0°C~+70°C ...