Xiaomi Linptech Human Body Sensor HS3 Infrared Light Sensing Home Intelligent Scene Human B…

The Linptech HS3 is a room automation sensor intended to notice human movement and provide a trigger for lights, routines and other connected devices. Its role is closer to a smart motion detector than a security camera: it does not record video, and the useful output is an occupancy/motion event that can be used in a scene.

The listing also identifies light sensing, which is useful for automations that should behave differently during the day and at night. A typical example is switching corridor or stair lighting only when movement is detected and the room is dark enough. This keeps the device focused on low-friction automation rather than constant manual control.

HS3 is sold as a Mijia-compatible sensor. The exact radio implementation and gateway requirements are not stated reliably enough in the supplied marketplace dossier to publish a protocol value, so the specification set avoids guessing between Bluetooth, Bluetooth Mesh and other Xiaomi ecosystem links. Mi Home compatibility is retained with moderate confidence because the exact HS3 name and Mijia positioning are consistent across the listing evidence.

Placement matters for any infrared motion sensor. It should have a clear view of the area where people are expected to pass, and it should not be aimed at strong heat sources or locations where direct sunlight can create unstable readings. It is best suited to movement-based automation; users who need reliable detection of a completely stationary person should look for a true presence/radar sensor instead.