Aqara RTCGQ12LMGB Guía Rápida página 6

Option 3: Stick the Motion Sensor to the stand,
and stick the stand to where you
need it.
* Keep the surface clean and dry.
*
The recommended installation height is 1.2 m to 2.1 m
(47.2 in. to 82.6 in.). If the installation height is below 1.2
m (47.2 in.), the detection area will decrease; if it is more
than 2.1 m (82.6 in.), the detection area may have blind
spots.
2.1m
Effective Detection Area - Side View
* NOTE: the lens should be aligned with the detection
area, and placed as close to the edge of a table or
cabinet as possible.
2m 4.5m 7m