User`s guide

Intelligent Building Series C-Touch User’s Guide

7.2.4 Backlight Control Page

The C-Touch unit contains a light behind the screen. This light is called a

“backlight”. The backlight comes on when the room light level is too dark

to see the screen properly. The actual room light level used to turn the

backlight on can be adjusted using the “Backlight Control” page. To use

this feature, call up the “Backlight Control” page and turn the lights down

gradually in the room where the C-Touch unit is installed. When the light

level is low enough to make it hard to read the screen, press the “SET

THRESHOLD” button. From now on the backlight will come on whenever

the room illumination drops below this level.

The remaining two buttons labelled “ON” and “OFF” allow you to

temporarily turn the backlight on or off. The last line on the screen, labelled

“Backlight:” indicates the actual state of the screen.

Another useful feature associated with the backlight is the timeout feature.

After a certain length of time, set by your installer, the C-Touch unit will

automatically select a page to display. You can have one sort of page to be

displayed after the timeout in a darkened room and another type of page

in a room that is lit.