A Building Automation System (BAS) is a computer-based system that controls and monitors the operations of a building, such as lighting, temperature, security, and energy management. The BAS can be used to manage a single building or multiple buildings, and it is designed to improve the efficiency of a building’s operations. The BAS typically consists of a central control unit, sensors, and actuators that are connected to the control unit. The sensors detect changes in the environment, such as temperature, humidity, and motion, and the actuators are used to control the building’s operations, such as turning on lights or adjusting the temperature. The BAS is programmed to respond to the changes in the environment, and it can be used to automate tasks, such as turning off lights when they are not in use or adjusting the temperature when the weather changes. The BAS can also be used to monitor energy usage and provide alerts when energy levels are too high or too low. By using a BAS, building owners can save money on energy costs, improve the safety and security of their building, and make their building more efficient.