FBs Analog Input - Output Combo Expansion Card (Front Mount) Combo Analog Board 2 channels, 12-bit analog input (0~10V or 0~20mA)1 channel, 12-bit analog output (0~10V or 0~20mA)FBs-B2A1DFB's PLC CatalogLink Here Download Main unit ManualDownload Main unit Manual - Hardware and Instruction. Click Here Download FREE Programming SoftwareDownload WinProladder. Click Here