Firefly Workshop CEM5861G-M11

CEM5816G-M11 is a high-sensitivity 24GHz millimeter-wave FMCW human presence detection module. Unlike traditional solutions that detect human presence solely through large body movements or subtle limb motions, its key feature is the ability to detect micro-movements such as human breathing for presence detection, in addition to conventional motion sensing. The module uses FMCW modulation and can simultaneously output target range information. An optional ambient light sensor is available, allowing users to set a light sensitivity threshold based on environmental illuminance — enabling the module to turn off under sufficient lighting and turn on under low-light conditions, making it suitable for applications such as lighting control.