This product is a PCI Express bus-compliant interface card for digital signal input (12-24VDC). DI-128L-PE features 128ch opto-coupler isolated inputs (for use with current sink outputs), with 16ch of the inputs having an interrupt function. This product also has a digital filter function to help prevent mis-detection of input signals. With the driver libraries for Windows/Linux supplied as standard, applications with CONTEC hardware features fully utilized can be created. LabVIEW is supported with a plug-in of dedicated libraries.