Philips HF3550/60 User Manual page 4

Because the sensitivity to light differs per person,
you can set the light intensity of each alarm to a
level that matches your light sensitivity for an
optimal start of the day. The light intensity of the
Wake-up Light can be set up to 250 lux. You may
have to experiment with different settings for a
few days to find your optimal level. See the page
"Optimize your settings" for more information.
The duration of a natural sunrise varies with the
seasons and the geographic location. Most people
find that a 30-minute duration is good to prepare
their body for waking up in the morning, but if you
are very sensitive to light you may choose 20 or 25
minutes for the sunrise duration.
At alarm time, you will start hearing the selected
natural sound or the selected music from your
iPod library. It starts quietly and takes 90 seconds
to reach the volume level you selected. The
gradually increasing sound will make the wake-up
process even more pleasant, ensuring that you are
never woken up roughly.
Thanks to Smart Snooze, you can put the Wake-up
Light into snooze mode by tapping the product.
After 10 minutes (or a snooze time of your choice)
the sound will start playing again gently. The light
remains on during snoozing, just like a natural
sunrise.
You can stop the alarm by pressing the Sound
on/off button on your Wake-up Light or by simply
undocking your iPhone. The lamp stays on to give
you the opportunity to get out of bed without
switching on another lamp.
After waking up, you can turn off the light by
pressing the light on/off button on your Wake-up
Light. If you forget to do so, the light will
automatically turn off after 90 minutes.
In this app you can create up to 10 alarms with
fully customizable wake-up profiles. You can use
this app to wake up without the Wake-up Light. In
that case, the light function will not be available.
You will only hear the wake-up sound from the
speaker of your iPhone at alarm time.