The PDISO-8 is a low-cost 8-channel isolated input/output interface board designed for control and sensing applications. The PDISO-8 provides eight electromechanical relay outputs and eight optically isolated inputs, so you can both load (send) and sense signals. The PDISO-8 can be used in various applications including load switching, external-switch sensing, contact closure, and external-voltage sensing. This interface board is easily installed in any ISA-bus compatible computer.