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When inding a desirable location for the doorbell:
Make sure the visitor is standing 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.
Avoid mounting it to where relections 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 suficient for
infrared operation.
Test at the front door to determine when the infrared
LEDs turn on. When they are in operation, they turn
red.
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