Withings BPM Core Manuel D'utilisation page 24

LED color signification
Signification des couleurs des LED | Bedeutung der LED-Farben
The LED of the button of BPM Core can be:
Blue: if BPM Core has not been paired with a mobile
device yet.
Green: for optimal and normal blood pressure
measurements. The LED can also be green if BPM
Core has been paired with a mobile device.
Orange: for high normal blood pressure
measurements. The LED can also be orange if
BPM Core has a low battery (you can still take a
measurement) or if there is an error during one of the
measurements during x3 measurement mode. During
x3 mode, you may see a short ERROR display and
orange LED, but afterward, it will give you the option
to restart the measurement. If you fail to get a result
on the second try, the LED will turn red.
Red: if hypertension (grade 1, 2, 3) or isolated systolic
hypertension are detected. The LED can also be red if
BPM Core has no battery or if there is an error during
the blood pressure or stethoscope measurement.
Pink: if you press and hold the monitor's button for 6
seconds until the Settings menu opens and "Training"
is displayed on the screen. The LED can also be pink
when BPM Core has been factory reset.
Note: The LED color displayed on the device may
vary depending on the classification guidelines of
your country. Please go to support.withings.com for
more information on blood pressure measurement
classification.