![Overview / Features | DIO-1616HN-USB | Digital I/O USB I/O unit 16ch/16ch (isolated 5 - 50VDC) - the N series | CONTEC Overview / Features | DIO-1616HN-USB | Digital I/O USB I/O unit 16ch/16ch (isolated 5 - 50VDC) - the N series | CONTEC](https://www.contec.com/-/media/contec/product/photo/x1/dio-1616hn-usb_l_rgb_96dpi_500x500.jpg)
Overview / Features | DIO-1616HN-USB | Digital I/O USB I/O unit 16ch/16ch (isolated 5 - 50VDC) - the N series | CONTEC
![USB-PIO USB 24 Digital I/O Unit. Relay and Opto Isolated expansion available. For Windows, MAC,and Linux - www.audon.co.uk USB-PIO USB 24 Digital I/O Unit. Relay and Opto Isolated expansion available. For Windows, MAC,and Linux - www.audon.co.uk](https://www.audon.co.uk/user/products/large/usbpio.jpg)
USB-PIO USB 24 Digital I/O Unit. Relay and Opto Isolated expansion available. For Windows, MAC,and Linux - www.audon.co.uk
![Specifications | DIO-0808LY-USB | Digital I/O USB I/O unit 8ch/8ch (isolated 12 - 24VDC) - the Y series | CONTEC Specifications | DIO-0808LY-USB | Digital I/O USB I/O unit 8ch/8ch (isolated 12 - 24VDC) - the Y series | CONTEC](https://www.contec.com/-/media/contec/product/photo/x1/dio-0808ly-usb_high_rgb_96dpi_500x500.jpg)
Specifications | DIO-0808LY-USB | Digital I/O USB I/O unit 8ch/8ch (isolated 12 - 24VDC) - the Y series | CONTEC
![Overview / Features | DIO-128SLX-USB | Digital I/O USB I/O unit bi-directional 128ch (isolated 24VDC) - the X series | CONTEC Overview / Features | DIO-128SLX-USB | Digital I/O USB I/O unit bi-directional 128ch (isolated 24VDC) - the X series | CONTEC](https://www.contec.com/-/media/contec/product/photo/x1/dio-128slx-usb_usb_rgb_96dpi_500x500.jpg)