24
English
Problem
I'm lying in on
my back, but
the sensor
does not
vibrate.
Possible cause
The sensor is in the
adaptation phase
(session 1-7 and
after reset). The
sensor slowly
builds up the
number of
vibrations each
night. During this
phase the sensor
will not vibrate
every time you
sleep on your back
(see 'Adaptation
phase').
The sleep session
is not active.
Solution
Check if a dot is shown
on the display of the
sensor. The dot indicates
that the adaptation
phase is active (see
'Adaptation phase').
From session 8 onwards,
the sensor always
vibrates when you lie on
your back.
Press and hold the the
activation button for two
seconds to start a sleep
session.
The sensor vibrates
briefly and shows '- -' on
the display to indicate
that the sleep session
has started (see 'Starting
a sleep session').