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Getting started, Locating the doorbell – VTech IS7121_-2-22 Manual User Manual

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Getting started

11

Locating the doorbell

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.
Test at the front door to determine when the infrared LEDs turn on. When they are

in operation, they turn red.

Infrared LEDs