This product is an interface board based on the PCI Express bus, which provides input and output of digital signals (12-24VDC).You can input up to 16 points and output up to 16 points with one piece.It has a built -in protective circuit (surge voltage, overcurrent) of the output transistor.By using the attached driver library [API-PAC (W32)], you can create Windows application software in various programming languages that support Win32api functions such as Visual Basic and Visual C ++.- [Extended module] Bus specification PCI Express Size Short size Used connector D-SUB 37-pin (female) [Digital input/output] number of input points 16 points Output points 16 points two -way score - Response speed (input) 200μSec (max.) Response speed (output) 200μSec (max.) Operate voltage (input) 12-24VDC Operate voltage (output) 12-24VDC input circuit Photoba plastic insulation input (compatible with sink output) Output circuit Photoba Plastic Insulation Open Collector Output (Sink Type) Built -in power supply -