Dawn Duration Time - Philips HF3531 Mode D'emploi

Adjusting the dawn duration time
The dawn duration time is the time in which the light intensity of the lamp gradually increases to the
set level before the alarm sound is played. The default dawn duration time is 30 minutes, but you can
reduce the dawn duration time to 20-25 minutes or increase it to 35-40 minutes.
1. Simultaneously press and hold alarm 1 and alarm 2.
2. The default dawn duration time of 30 minutes appears on the display.
3. Press the + and – button to adjust the minutes.
2
1
+
20 40 min
3
22