Selve i-R Light Sensor Notice D'utilisation page 28

GB
Explanation of functions/terms used
Sun protection function
The sun threshold value is pre-set to a mean value.
The sun threshold setting ranges from very overcast (left switch
position) to direct sunlight.
Sun threshold value is exceeded for longer the 3 min.
is closed.
Sun threshold value is not reached for longer than 15 min.
Shutter is opened.
Twilight function
The twilight threshold setting ranges from darkness (left switch
position) to early twilight.
Twilight threshold value is not reached
Note: The default setting for the twilight function is OFF (Encoding
switch 2).
Broken glass function
If the window plane is broken, the broken glass sensor will be
activated, causing the shutter to be adjusted into the lower final
position.
Note: The default setting for the broken glass function is OFF
(Encoding switch 3).
Shutter is closed.
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Shutter