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Suunto Smart Sensor User Guide - 1.1


The transmission range of the Suunto Smart Sensor can be three meters or more under ideal conditions.

However, for best results, minimize obstructions between the Suunto Smart Sensor and your sports watch or mobile device. Keep the watch or mobile in front of you or to one side in a pocket or on a belt. If you keep your arms behind your back or put your mobile device in a fanny pack, for instance, the transmission signal from Suunto Smart Sensor may be interrupted.

If the Suunto Smart Sensor does not seem to be sending heart rate data even without obstructions, try any of the following:

  1. Ensure the belt contact areas (electrodes) are wet.
  2. Adjust the belt so that it fits tighter against your chest.
  3. If your skin tends to remain dry during a workout, use electrode gel.
  4. Check that Bluetooth is on in the device your belt is paired with.
  5. Change the battery in the sensor and re-pair with your sports watch or mobile device.

If the Suunto Smart Sensor seems to send incorrect data, try any of the following:

  1. Ensure that the sensor is attached correctly to the belt with both snaps snugly fitted.
  2. Pair the belt again with your Bluetooth-enabled device.

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