Sigma ONYX EASY Manual Del Usuario página 58

Why does the display react slowly or is coloured black?
The operating temperature may be too high or low. Your heart rate monitor
is designed for temperatures between 0 °C and 55 °C
(32 - 140 degrees F).
What should I do if the screen display is weak?
A weak display may be due to weak batteries. You should change them as
quickly as possible – battery type CR 2032 (Item No. 00342)
PAGE 26
7.3 Beep The different volume settings are:
summary
1 x long:
The ONYX EASY
When entering Zone
provides information
with various beep 3 x short:
signals. If you are below Zone
5 x short:
When you are above Zone
3 x short in interval:
Countdown has finished,
alarm rings
1 x short:
Button beep