Multifunctional Room Sensor for Businesses: Yealink RoomSensor is a multifunctional room sensor for businesses with built-in features for detecting occupancy, temperature, humidity, and light. It connects to the Yealink RoomPanel via the BLE protocol and offers features such as automatic room booking, automatic check-in, and more. Passive infrared technology makes motion detection more effective and accurate. Low power consumption and a replaceable lithium battery provide a maximum service life of 5 years. With wireless operation and an adjustable-angle design, it can be easily installed on all types of surfaces and easily cover the entire meeting room. It supports real-time monitoring of device operation and provides one-stop management via the Yealink WorkSpace Platform. 1x Yealink RoomSensor, 1x CR123 lithium battery, 3M adhesive tape, and screws for ceiling/wall mounting