PB-16H is a digital I/O module mounting board designed for 0.6 inch modules compatible with SM Series modules. The board features 16 positions with replaceable 1 amp fuses, 3.3K ohm pull-up resistors, and LED status indicators for each channel. It includes positive and negative logic supply bus termination, a 1 amp logic supply fuse, and a 5 amp line fuse. The board dimensions are 14.0 inches (355.6 mm) in length with standoff through holes of 0.15 inch (3.8 mm) diameter. Terminal barrier strips accept wire sizes from 24 to 12 AWG, making it suitable for industrial automation and control system applications requiring reliable digital I/O interfacing.