DoorBird A1121 Series, Installation Manual

Page: 13 / 64

ENGLISH
13
NOTICE
Please take care when connecting the cables 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.
8
ASSEMBLE THE DEVICE TO THE MOUNTNG HOUSING (BACKBOX)
If you use the surface- or flush-mounted version, assemble the front panel with the attached Main Eletrical
Unit carefully using the orange (Torx+Pin) screw driver provided with the wall mounting-bracket / mounting
housing. Turn the safety screw clockwise until it is hand-tight.
NOTICE
Tighten the safety screw by hand only (less than 5 newton meter [Nm]), otherwise the Main Eletrical
Unit housing may be damaged.
If you use the retrofit model, assemble the front
panel with the attached Main Eletrical Unit
carefully to the existing panel using the metal
clamps.
Retro Fit model
Surface-mounted model Flush-mounted model