Timex Group USA Inc. TMXM010 Manuel D’Utilisation

If your heart rate readings become erratic or stop, you may need to 

replace the battery on your heart rate sensor. You can change the battery 

yourself without any special tools. 
This product uses a CR2032 lithium battery for the heart rate sensor. To 

change the battery:

BATTERIA

APRIRE

BATTERIA

1.  Open the transmitter battery lid with a coin, turning the coin 

counterclockwise.

2.  Replace the battery with a new CR2032, 3V lithium battery with (+) 

facing you, taking care not to touch the two contacts and discharge 

the battery.

3.  When you have finished inserting the battery, replace the lid and with 

a coin — turn or tighten it in a clockwise direction.

v

  To avoid build up of materials that can interfere with the Digital Heart 

Rate Monitor’s ability to receive a valid pulse, rinse the Digital Heart 

Rate Sensor with fresh water 

v

  Do not clean the Digital Heart Rate Monitor sensor or chest strap with 

abrasive or corrosive materials. Abrasive cleaning agents may scratch 

the plastic parts and corrode the electronic circuit.

v

  Do not subject the Digital Heart Rate Monitor to excessive force, 

shock, dust, temperature, or humidity. Such treatment may result 

in malfunction, a shorter electronic life span, damaged batteries, or 

distorted parts.

v

  Do not tamper with the Digital Heart Rate Monitor’s internal 

components. Doing so will terminate the Monitor’s warranty and may 

cause damage. 

v

  The Digital Heart Rate Monitor contains no user-serviceable parts, 

except batteries.