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Switching to Sensor Direct Mode

Pairing a smart computer with a sensor

Tire circumference setting

Set the tire circumference for a sensor capable of speed measurement.


• Pairing (sensor ID synchronization) must be performed first.

Pairing a smart computer with a sensor

• Set tire circumference for each sensor.
The default value is 2096 mm (700x23c).

1. From the measurement screen, press OPTION for 2 seconds to switch to the sensor pairing screen.

(2 seconds)Sensor pairing screenMeasurement screen

* When the sensor pairing screen is left on for 1 minute, the smart computer returns to the measurement screen.

2. Select the sensor you want to set, and enter the tire circumference.

Enter the circumference in mm of the tire (the length of the outer circumference of the tire) on which the sensor is installed.

(Setting range: 0100 – 3999 mm)
Determining tire circumference


Sensor selection(1 second)(1 second)Increase numbersTire circumference valueMove to next digit

* Sensors that can be selected are those that have been paired with Cateye Cycling™ or a smart computer. The letter that appears after the sensor name indicates how the sensor was paired.

A : Sensor paired with Cateye Cycling™

C : Sensor paired with a smart computer

* Error is displayed if values outside the setting range are entered.


3. Press OPTION to confirm settings.

Pressing OPTION again returns to the measurement screen.

* If you have changed settings, always press OPTION to confirm changes.


This completes the tire circumference setting procedure.