The LifeSmart Human Presence Sensor uses 24 GHz mmWave Doppler radar to detect human presence, even with minimal movement such as breathing. It supports ZigBee for smart home integration and provides a detection range of up to 4 meters under optimal conditions. The sensor features three sensitivity levels, interference suppression for indoor environments, and an adjustable hold time from 30 seconds to 30 minutes for customized automation. Designed for indoor use, it is flush-mounted in the ceiling, making it ideal for homes, hotels, and offices.