This product is a USB2.0 -compatible digital input and output terminal that easily performs digital signals (12-24VDC) by connecting to a USB interface of a personal computer.You can input up to 8 points and output up to 8 points.By using the attached driver library [API-USBP (WDM)], you can create application software for Windows using various programming languages that support Win32api functions such as Visual Basic and Visual C ++.。- [Extended module] Bus specification USB 2.0 Size Y type Used connector 2X Screw terminal stand 14-pin [Digital input/output] number of input points 8 points Output points 8 points two -way score - Response speed (input) 300μSec (max.) Response speed (output) 300μSec (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 -