Which current PowerLab Models have Digital Input / Output Capabilities?

The following PowerLab Series have both Digital Input and Digital Output ports:
- All /35-series PowerLabs (4/25, 8/35 and 16/35)
- PowerLab 26T
The following PowerLab models do not have Digital Input / Digital Output ports:
- PowerLab /26-series (2/26 and 4/26)
- PowerLab 15T
Please Note, although the 26T has a digital output, this is not compatible with the Fast Response Output Extension.