Avoid mounting it to where reflections may be caused by sunlight, for example,
opposite to a white wall.
Two built-in infrared LEDs are for night vision. Make sure the surrounding light
source is sufficient for infrared operation.
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Infrared LeDs
When finding a desirable location for the doorbell:
Make sure the visitor is standing in a reasonable distance away from the
doorbell.
Avoid mounting it on a location which is subjected to vibration or shock.
Avoid mounting it on an enclosed area where it may cause echoes.
Avoid mounting it to where it is exposed to direct sunlight.
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