C4-RPI CM4 without IOs
In this section you will find all C4 IoT controllers without integrated IOs, but with options for 2nd Ethernet or integrated LTE modem
![C4-RPI CM4 without IOs](https://www.resi.cc/prestashop/c/30-category_default/c4-rpi-cm4-without-ios.jpg)
In this section you will find all C4 IoT controllers without integrated IOs, but with options for 2nd Ethernet or integrated LTE modem