The Desigo PXC4 controller is designed as a compact device with 16 onboard I/Os that can be expanded to a maximum of 40 I/Os with additional TX-I/O modules.

The Desigo PXC5 is a programmable controller used for system-level functions like alarm routing, system-wide scheduling and trending, device supervision, stronger integration capabilities, and embedded BACnet routing.

The device must be online to use features, such as remote web access.