A DDC system, or Direct Digital ContControl system, is a type of control system that uses digital processing and communication technology to monitor and control the operations of a building or facility. It is a type of Building Automation System (BAS) that uses digital technology to control a variety of building systems, such as HVAC, lighting, security, and fire safety. DDC systems are designed to be user-friendly and provide the user with real-time information about the building’s environment and operations. They are capable of controlling a variety of systems and can be programmed to respond to changes in the environment, such as temperature, humidity, and lighting levels. DDC systems can also be used to monitor energy usage and optimize energy efficiency. DDC systems are becoming increasingly popular in commercial and industrial buildings, as they provide an efficient and cost-effective way to monitor and control building operations.