Follow these steps to pair the external tire pressure sensors:

1. Enter pairing mode: Press and hold both the [+] and [-] buttons for about 5 seconds until you hear one long beep, indicating pairing mode is active.

2. Front wheel pairing: The front tire pressure value area on the screen will flash, indicating it is waiting for front wheel pairing. Screw an external sensor (marked for the front wheel) onto the front wheel valve stem. Once data is received, you will hear one beep, and the front wheel pairing is complete with normal values displayed.

3. Rear wheel pairing: The system will automatically switch to rear wheel pairing. The rear tire value on the screen will flash. Install the second sensor (marked for the rear wheel) onto the rear wheel valve stem. Once data is received, you will hear two beeps, and the rear wheel pairing is complete with normal values displayed.

Notes: If the sensor is installed incorrectly or fails to detect tire pressure during pairing, the displayed value may be inaccurate. During riding, the system will automatically update to accurate values.