DoorBird D21 Serie Manuel D'installation page 9

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.
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 145 cm (57 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.
NOT IC E
The housing temperature 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.
The network cable between the device and the PoE-Switch/PoE-Injector/Internet 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.
REMOVING THE CASING (ONLY FOR ORDERS PLACED IN THE DOORBIRD
4
CONFIGURATOR)
If the back casing is included separately and not mounted to the front cover, please skip this step.
Use the supplied screwdriver to carefully remove the front cover including the main unit from the
mounting back casing.
Unscrew the 1 cm safety screws.
2
Should there already be a doorbell or door station on
the exterior wall of the house, please dismantle it.
NOTI CE
Slide the front cover upwards.
DISMANTLING THE EXISTING
DOORBELL
An image sensor must not be exposed to
direct sunlight for an extended period of time.
Direct sunlight will "blind" the camera and
may permanently bleach the small color filters
on the image sensor chip.
Any defects caused by direct sunlight are not
covered by warranty.
Pull the front cover in your
direction.
9