DoorBird A1121 Serie Manual De Instalación página 10

6
PREPARE POWER SUPPLY
The device does not have a battery as power supply, therefore, choose one
of the following options.
OPTION 1
Power supply using the power supply unit (mains adapter)
To power the device using the provided mains adapter, 2 insulated wires
are required. The power supply unit has a 300 cm (9.8 ft) long cable with
two insulated wires. The network connection is then established via a
network cable or alternatively via WiFi.
Do not plug the power supply unit into the wall socket yet.
N OT IC E
Only use the power supply unit provided along with the device,
or a DIN-rail power supply unit (see "OPTION 3") that you
can obtain from us separately, since this has been specially
stabilized electrically and is equipped with an integrated audio
interference reduction device. Other power supply units may
destroy the device or cause poor transmission quality. The
warranty automatically expires if you use a different power
supply unit.
The power supply unit is plugged into a wall socket, usually
N OT IC E
where the two wires from your assembly location come out of
the wall in the interior of the house.
The provided mains adapter is not outdoor-ready and for
indoor-use only.
OPTION 2
Power supply and network connection using PoE (Power over
Ethernet)
To power the device via a PoE-Switch (e.g. D-Link DGS-1008P) or PoE-
Injector (e.g. DoorBird Gigabit PoE Injector A1093), use a CAT.5 cable or
higher in accordance with the PoE standard IEEE 802.3af Mode A.
A CAT.5 cable or higher must be used for this purpose, as network signals
can only be transmitted over completely insulated, shielded and twisted
cables. If you use PoE as a source of power, the four wires for PoE then
simultaneously form the data line. The device will not start if your PoE-
Switch/PoE-Injector does not support the PoE Standard IEEE 802.3af
Mode A.
Do not combine the power supply from the power supply unit
N OT IC E
(mains adapter) with the power supply via PoE.
You can find further information about PoE here:
http://www.doorbird.com/poe
1. Disconnect the PoE-Switch or PoE-Injector from the power grid.
2. Place the network cable in the installation site of the device.
10
The provided mains adapter is only
capable to power one device. It is not
designed to power multiple devices
simultanously.
If you must power more than one device
with one power supply, we recommend
to use a PoE-Switch with PoE Standard
IEEE 802.3af Mode A or an appropriate
DIN rail power supply (see "OPTION 3").
If you must power more than one device
with one power supply , we recommend
to use a PoE-Switch with PoE Standard
IEEE 802.3af Mode A or an appropriate
DIN rail power supply (see "OPTION 3").
Theoretically (not recommended by us!),
an unshielded, but over the whole length
(max. 80 m/262 ft) twisted bell wire with
two pairs of wires (first twisted pair of
wires: "T+, T-", second twisted pair of wi-
res "R+, R-") can be used for the network
and PoE transmission as an alternative
to a Cat.5 network cable or better. This is
comparable to a Cat.3 network cable. In
this case, however, we cannot guarantee
the data throughput or the stability of
the network connection and power sup-
ply; this must be measured and checked
on site by qualified personnel over several
hours (network data is transmitted at
high frequency, therefore a shielded
Cat.5 network cable twisted in pairs or
better must normally be used).