DoorBird D21 Serie Manuel D'installation page 11

7
CONNECTING THE DEVICE
It is possible to connect the cables and wires to the device conveniently and safely via labelled connection ports.
You can connect all necessary cables and wires to the device now. Please remove any cables and wires from the
connection ports of the device that you do not need. Remove about 5 mm of insulation material at the end of
the wires that you would like to connect to the green screw connection terminal of the device.
Please take care when connecting the cables
NOT IC E
and wires. Connecting the cables and wires
the wrong way may damage the device.
Wires without insolation material must not
protrude out of the green screw connection
terminal, it may lead to electrical short and
damage the device.
The yellow, green, and red cables that lead
NOT IC E
out from the side of the Main Electrical Unit
must only be used to connect components
certified by Bird Home Automation.
DOORBIRD D21x
REL1 REL2 EXT
You can use the nylon cord
to temporary fix the front
panel to the mounting
housing (backbox) while
connecting the cables and
wires to the device.
Handle the front panel with care. The surface
of the front panel could be scratched or
otherwise damaged if handled without care.
15VDC
Only related for devices
with call button(s)
Each Call Button is
equipped with one jack.
4 Pin
11