2n Door intercom 2N Helios - Manual, 1322 v3.0 Manuel d'utilisateur télécharger pdf (Page 32)

Separate Backlight and Electric Lock Supply

Separate power supplies are necessary where the lock requires voltage higher than 12

V. In this case, an additional power supply (12V) must be used to illuminate the

button backlight - see the figure below. Other reasons for such connection are the

effort to minimise consumption from the back-up supply (which supplies the lock, not

the backlight), or just that two weaker power supplies are available

Lock and Backlight Connection

Connection of Switch 2

A new additional switch, Part No. 9135250E, has been designed for 2N® Helios. It

can be mounted into any basic unit, as an added option. To connect it, follow the

instructions included in the switch delivery.

El. lock

Supply AC

or DC

max.48V

Supply AC

or DC

max.12 V

tel.

line

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2n Door intercom 2N Helios - Manual, 1322 v3.0 Manuel d'utilisateur Page 32