C4-RPI CM4 only DIs
In this section you will find all C4 IoT controllers with integrated digital inputs. Our inputs are designed for use with 12-48Vdc or for 12-250Vac/dc signals. Many controller versions offer 2nd Ethernet interface or LTE modem.
![C4-RPI CM4 only DIs](https://www.resi.cc/prestashop/c/27-category_default/c4-rpi-cm4-only-dis.jpg)
In this section you will find all C4 IoT controllers with integrated digital inputs. Our inputs are designed for use with 12-48Vdc or for 12-250Vac/dc signals. Many controller versions offer 2nd Ethernet interface or LTE modem.