NOTE: The speed sensor should be installed in the front wheel.

TIPS: iGPSPORT recommends you secure your bike on a stand while installing the sensor.

1. Place and hold the speed sensor on top of the wheel hub.

2. Pull the strap around the wheel hub, and attach it to the hook on the sensor.

The sensor may be tilted when installed on an asymmetrical hub. This does not affect operation.

3. Rotate the wheel to check for clearance. The sensor should not contact other parts of your bike.

NOTE: 

1. The LED flashes green for two seconds to indicate activity after two revolutions.

2. Please keep SPD61 away from magnetic substances at least 1 meter.

Video for installing SPD61 in the front wheel

https://www.youtube.com/watch?v=8a5vgwv3Su0