Have you paired the sensor?

• The sensor must be paired with Cateye Cycling™ or with smart computer.

​ Pairing a sensor or a Shimano DI2 system with a smartphone

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The electrode pad may have slipped out of position.

• Check that the electrode pad is still in close contact with your body.

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Your skin may be dry.

• Wet the electrode pad a little.

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The electrode pad may have deteriorated or become damaged due to prolonged usage.

• If this is the case, replace the attachment belt with a new one.