A Direct Digital Control (DDC) controller in a Building Automation System (BAS) is a microprocessor-based device that controls the operation of HVAC equipment, lighting systems, and other building systems. The DDC controller receives input signals from sensors, processes the data according to a programmed control strategy, and sends output signals to actuators to control the equipment. Unlike older pneumatic or analog control systems, DDC controllers use digital signals and microprocessors to perform control functions, offering ....
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