Getting Started; Power Supply; Door Unit; Backup - Marmitek DOORPHONE 210 Manual Del Usario

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7 Getting started

7.1

Power Supply

7.1.1

Door unit

With the supplied tool, loosen the screws holding the unit from the
mounting bracket. The screws are made specifically for anti-theft
purposes. It is necessary to keep the tool in a safe place for when you
need it later when replacing batteries. The door unit is powered with 8 to
12V AC or 12V DC. Connect a power supply to the terminals (8) at the
back marked with
In case of a power failure, the unit will automatically switch to power from
the alkaline batteries (if installed).
You can use your existing doorbell transformer as power supply, as long
as it can provide 8...12V, AC or 12V DC. When you want to use another
12V power supply, make sure it has a stable voltage output (Switching
adapter 100-240VAC (V) 12VDC) and not a transformer type that has a
high no load voltage!
7.1.2

Backup

Insert three UM-4 size AAA alkaline cells into the battery compartment;
observe correct polarity. We strongly recommend using alkaline batteries
instead of rechargeable batteries because at low temperatures (below
0˚C), rechargeable ones have poor performance and their capacity will
fall.
Please note the alkaline batteries are used only as a backup in case of
mains failure. They can only last for 1 - 2 days under normal operation.
Video DoorPhone 210
(not included).
7

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Video doorphone 210

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