Beurer PM 90 Heart rate monitor watch with chest strap Black/silver 676.10 데이터 시트

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of sweat beneath the chest strap. You can, however, also wet the 
contact points on the inside of the chest strap. For this, lift the 
chest strap up from the skin slightly and wet the two sensors with 
saliva, water or ECG gel (available at chemistry). The contact be-
tween skin and chest strap may not be interrupted also with grea-
ter movements of the thorax such as during deep breathing. Sig-
nificant chest chair can interfere with and even prevent contact.  

„ 

Put on the chest strap a few minutes before starting in order to 
warm it up to body temperature and establish optimal contact.  

The digital transmitters (chest strap, Speedbox, diagnostic scale) 
and receiver (HR monitor) have to be paired. If you buy each device 
separately, e.g. as a replacement, or if you change the batteries, 
then you have to pair the devices before use.  
You can find out how to pair the devices by reading the chapter 
“Basic settings”, section “Pairing the device signals”. 

Your HR monitor receives signals from the digital transmitters, chest 
strap and Speedbox, as soon as you have activated them and have 
changed into the 

menu by pressing the 

menu

 button.  

How you can identify on the display whether signals are being re-
ceived: 

 

If the heart symbol flashes, then the heart rate is being received 
from the chest strap.

 

If “0” is displayed in the 1

st

 line for a longer period, then the HR 

monitor cannot receive the signals from the chest strap. The 
display “0” can occur in the 

, 

 and 

 

menus. In this case, change into the 

menu with the 

menu

 button. The HR monitor tries once more to make 

contact with the devices.