The H1750 and H1770 are 24 and 64 bit of digital inputs and outputs. The input or output direction of each digital bit may be set individually or all at once.

The H1750 series board level digital I/O products provide direct interface to industry standard mounting racks and solid-state relay I/O modules. Mounting racks such as the PB16 and G4PB24 can be controlled directly with the H1750 boards.

The status of up to 24 digital inputs and control outputs are communicated to any host serial port in ASCII using jumper-selectable RS-232 or RS-485.

Two versions are available. The H1750-1 shown to the right contains a 50-pin ribbon connector mounted on the bottom of the PC board. The H1750-2 contains a male 50-pin ribbon connector mounted on the top of the PC board.