A DDC (Direct Digital Control) system is a type of control system that uses digital processing and communication technology to monitor and control the operation of a building’s mechanical and electrical systems. DDC systems are designed to provide efficient, cost-effective, and reliable control of a building’s environment, and are typically used in commercial, industrial, and institutional buildings. DDC systems are typically comprised of a number of components, including sensors, controllers, and actuators. Sensors are used to measure various environmental conditions, such as temperature, humidity, and pressure. Controllers are used to process the sensor data and make decisions about how to control the environment. Actuators are used to control the environment, such as by opening and closing dampers, adjusting the temperature, or controlling the lighting. DDC systems are capable of providing precise control of the environment, allowing for greater energy efficiency and comfort. They can also be used to monitor and analyze energy usage, helping to identify areas of inefficiency and potential savings. DDC systems are becoming increasingly popular in the commercial and industrial sectors, as they provide a reliable and cost-effective way to monitor and control a building’s environment.