The Siemens PXC100.D is a high-performance, freely programmable modular controller designed for building automation, specifically for HVAC and building service plants. As part of the Desigo PXC series, it offers native BACnet/IP communication over Ethernet, ensuring seamless integration into modern building management systems. Its modular design allows for flexible expansion with TX-I/O modules, making it adaptable for a wide range of applications from small to medium-sized buildings. The integrated 2-port Ethernet switch simplifies network cabling, reducing installation costs. With comprehensive system functions like alarming, scheduling, and trending, the PXC100.D provides robust and reliable control for optimal building performance and energy efficiency.