DIO-8/8(USB)GY is a USB 2.0 compliant module that extends the digital signal I/O functions of a PC. DIO-8/8(USB)GY has 8 opto-isolated input and 8 opto-isolated output channels for 12 - 24VDC. Using expansion modules, the number of I/O channels can be extended. In addition, this product can be directly attached onto 35-mm DIN rails for embedded applications. Windows driver is bundled.