Beurer PM 90 Operating Instructions Manual page 26

you stop training and the power saving mode is subsequently ac-
tivated.
If the LightManager was activated (ON) while the pulse was not

being measured, the LightManager function will remain active for
an hour and then it will be automatically switched off (OFF). If you
press a button during this time, the LightManager will be active for
a further sixty minutes.
You can switch off the LightManager manually at any time to

reduce the power consumption as much as possible.
Change into the
menu
Limits
option / set
Units
option / set
LightMan
option / set
OFF LightMan
start / stop
play flashes.
start / stop
function alternately on (On) and off
(Off).
Back to the
option / set
Setting
is displayed.
is displayed.
is displayed.
is displayed. The dis-
Switches the LightManager
LightMan
25
menu.
display.
G
B