In smart buildings, which device is primarily used to determine the occupancy of rooms?

In smart buildings, occupancy detection is crucial for optimizing energy use, comfort, and security. The primary device used to determine the occupancy of rooms is a motion sensor. Motion sensors detect movement within a space, allowing them to ascertain whether a room is occupied or unoccupied. They are commonly used in lighting and HVAC systems to automate responses based on the presence or absence of occupants, contributing to energy efficiency and enhancing user comfort.

While smart lights can integrate with occupancy sensors to adjust illumination based on room occupancy, they do not independently determine occupancy. Instead, they rely on signals from motion sensors or other occupancy detection methods. The companion robot and customer edge device have different functions and do not serve the primary role of detecting room occupancy in the context of smart building management.