Building Automation and Control Systems (BACS) are systems that are used to monitor and control the operations of a building. These systems are used to manage the building’s energy usage, ventilation, temperature, lighting, and security. BACS are also used to monitor and control the building’s mechanical and electrical systems, such as the HVAC, plumbing, and electrical systems. The systems are designed to provide a safe and comfortable environment for the occupants of the building. BACS are typically connected to a network, allowing for remote monitoring and control of the building’s systems. The systems can be programmed to respond to certain conditions, such as changes in temperature or occupancy levels. BACS are becoming increasingly popular in commercial and residential buildings, as they can provide energy savings and increased safety and comfort.