Building sensors are devices that are used to monitor and measure the environment inside a building. They are used to detect changes in temperature, humidity, light, air quality, and other environmental conditions. They can also be used to detect movement, sound, and other activity. Building sensors are an important part of modern building management systems, as they provide valuable data to help optimize energy efficiency, improve occupant comfort, and reduce operational costs. Building sensors can be connected to the Internet of Things (IoT) to enable remote monitoring and control of the building environment. This can be especially useful in commercial buildings, where energy costs can be significantly reduced by controlling temperature, lighting, and other factors. Building sensors can also be used to detect security breaches, detect fire, and provide early warning of other potential hazards. By providing real-time data, building sensors can help ensure the safety and security of occupants and property.