DoorBird D21 Serie Installationsanleitung Seite 9

You can use the nylon cord to
temporary fix the front plate to the
mounting housing (backbox) while
connecting the cables and wires to
the device.
LAN/POE
PORT DESCRIPTION
LAN/POE RJ45 jack to connect a standard Network cable Cat.5 or better, coming from the Internet
Router/PoE-Switch/PoE-Injector.
NOT ICE
REL1, REL1 Bi-stable latching relay #1, max. 1-24 V DC/V AC, 1 Ampere. Security feature: The relay
keeps its state even in the case of loss of power. You can configure the default state of the
relay (open/close) via the DoorBird App. These ports can be used to connect e.g. an electric
REL1
door opener. The device does not supply power to the connected device. The power supply
REL1
for the electric door opener must be installed separately.
REL2, REL2 Bi-stable latching relay #2, max. 1-24 V DC/V AC, 1 Ampere. Security feature: The relay
keeps its state even in the case of loss of power. You can configure the default state of
the relay (open/close) via the DoorBird App. These ports can be used to connect e.g. an
electric door opener. The device does not supply power to the connected device. The power
REL2
supply for the electric door opener must be installed separately.
REL2
BELL, BELL
NOT I CE
REL1 REL2 BELL EXT 15VDC
Do not power the device simultaneously via the power supply from the power
supply unit (mains adaptor) and the power supply via PoE.
When wiring an electric door opener directly to a door station, there is a risk that
the electric door opener could be tampered by unauthorized third parties (e. g. by
breaking the door station and short-circuiting the wiring of the door opener).
Therefore, we generally recommend the use of a remote safety relay mounted
indoors (e. g. DoorBird I/O Door Controller A1081) for wiring an electric door
opener for a more secure installation in your home.
When wiring an electric door opener directly to a door station, there is a risk that
the electric door opener could be tampered by unauthorized third parties (e. g. by
breaking the door station and short-circuiting the wiring of the door opener).
Therefore, we generally recommend the use of a remote safety relay mounted
indoors (e. g. DoorBird I/O Door Controller A1081) for wiring an electric door
opener for a more secure installation in your home.
Reserved – Do not use!
Only related for devices
with call button(s)
Each Premium Soft-Touch call
button is equipped with two jacks.
4 Pin 2 Pin
9