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3.2.
Connections
Connecting the battery and the mains power supply
As far as the battery is concerned, there are two cables, red and black for connection to the positive
and negative pole respectively.
Keyboard connections
In order to simplify the installation procedure, the keyboard has two parts, the base and the main
body. The base is the part that must be mounted to the wall. It contains only the connections terminals
and a small alignment vial that is used to correctly mount the base. After connecting the cables, the
main body is fastened to the base. A screw on the bottom side does not permit accidental removing of
the main body from the base.
To connect the panel to the keyboard of keyboards use the terminals 12V, -, A and
Β. Respective ter-
minals are also found on the keyboard. The connection is a typical RS-485 connection and requires a
terminal resistor on the two outmost devices.
Connecting a keyboard to the panel. The jumper for the terminal resistor must be placed in order to
make contact with the 2 pins (activated terminal resistors).
