DoorBird D21 Série Manuel D'installation page 8

Should these requirements not be fulfilled, it may occur, for example that the
performance of audio and video is poor or push notifications are delayed or do
not arrive on your smartphone or tablet at all.
High-speed Internet (via landline): DSL, cable or optical fibre
Network: Ethernet, with DHCP
STEP 1: SWITCHING OFF POWER
Switch off the power to all wires leading to the assembly location, i.e.
the door chime, electric door opener, power supply unit for the video
door station etc.
STEP 2: DISMANTLING THE EXISTING DOORBELL
Should there already be a doorbell or door station on the exterior wall of the
house, please dismantle it.
STEP 3: DETERMINING THE ASSEMBLY LOCATION
The device uses an ultra wide-angle hemispheric lens so that even when the
person is a minimum distance of 50 cm (19.68 in) away from the device, a low
installation height is sufficient. The lens is therefore not mechanically adjustable.
The camera lens should be located at an altitude of at least 125 cm (49.22 in).
You may check this prior to the final mounting.
When choosing the assembly location, consider the lighting conditions. Avoid
direct sunlight, direct backlight and reflective surfaces.
Do not expose the device to direct sunlight. The housing temperature
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can exceed the maximum allowed temperature limit. This can result
in damage of electric and mechanic components of the device and
injuries especially when touching exterior parts of the device. White
and bright silver-colored front plates absorb less sunlight than dark
ones.
An image sensor must not be exposed to direct sunlight for an
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extended period of time. Direct sunlight will "blind" the camera
and may permanently bleach the small color filters on the image
sensor chip.
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Any defects caused by direct sunlight is not covered by warranty.
The network cable between the device and the PoE-Switch/PoE-Injector/Inter-
net Router can have a maximum length of 80 meters/262 feet (IEEE 802.3).
If you have only two wires available at the assembly location, you
may use of the "DoorBird 2-Wire Ethernet PoE Converter A1071",
sold separately. It allows you to transfer network data (Ethernet) and
power (PoE) with a simple two-wire cable over long distances. For
example; existing buildings with a simple two-wire bell wire can be
equipped with network technology without having to retrofit any
network cables.
STEP 4: REMOVING THE FRONT PLATE
Remove the front plate carefully using the screw driver provided with the
device from the mounting housing (backbox).
1.) Turn out the 2.) Pull down the
security screws for front panel.
1 cm
3.) Pull the front panel
towards you.
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