2N TELEKOMUNIKACE a.s., www.2n.cz
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External Power Supply and Electric Lock Connection
2N Helios Force/Safety
®
require 12 V (
) supply for:
DC only!
Built-in audio amplifier – current draw of up to 100 mA,
Name tag and keypad backlight – current draw of up to 150 mA
Electric lock – current draw according to the lock type
The electric lock can be fed from the same source as the intercom or another supply.
2N Helios Force/Safety
®
contains a solid-state switch, which is able to switch both AC
and DC regardless of polarity. Make sure that the current and voltage values do not
exceed limits (refer to the Technical Data) and that the technical parameters of the
lock and power supply are compatible.
Warning
Never switch 230 or 120 V mains voltage directly!!!
Caution
If the lock power supply fails and the telephone system carries on
working, the intercom is unaware of the failure the switch will be
password-activated and the activation is acoustically signalled, but the
electric lock will not work because of the lack of power.
Ground connection is mandatory. If used power supply output is
grounded, you can connect GND terminal to it.
