4
it does not affect the performance. If you must clean it,
please try to blow it off or pick out the dirt very lightly. Do
not try to wipe it, which may cause more scratches. Due to
the reliability design of the PIR lens, scratches do not
reduce the PIR detection performance.
Figure 1: Front View
IR LEDs
Lock
Hole
Optics
Lens
PIR
Lens
Light
Sensor
Indicator
Lock
Buckle
Antenna