Техническая Спецификация для Sigma PC 25.10 28302

If no heart rate is shown on the display, this may be due to the 
following reasons:
k  The belt with the heart rate transmitter is not worn correctly.
k  The sensors (electrodes) on the heart rate transmitter are 

 

dirty or dry.

k  Interference from electrical sources (high voltage lines, 

 

railway cables, etc.).

k  Transmitter battery (CR 2032) is empty (Item no. 00342).

Before starting to train, consult your doctor to avoid risks to 
your health. This applies in particular if you have cardio-vascular 
problems.

The PC 25.10 is equipped with an „ON/OFF“ battery 
compartment.

Please proceed as follows to change the battery:
Open the battery compartment by setting the arrow 
in “OPEN” position. Remove the battery compartment 
door and insert the new battery. Please make sure that 
the + pole is visible. Insert the battery compartment 
door with the arrow on “OPEN” and turn it to “ON”.
Note: If you are not using the watch for a longer time, 
set the battery compartment door to “OFF” to save the 
battery charge.