Pairing the Speed Sensor With Your SmartphoneThe speed sensor must be paired directly through the GarminConnect app, instead of from the Bluetooth settings on yoursmartphone.1 From the app store on your smartphone, install and open theGarmin Connect app.2 Bring your smartphone within 3 m (10 ft.) of the sensor.NOTE: Stay 10 m (33 ft.) away from other wireless sensorswhile pairing.3 Rotate the wheel two revolutions to wake up the sensor.The LED flashes green for five seconds to indicate activity.The LED flashes red to indicate a low battery level.4 Select an option to add your device to your Garmin Connectaccount:• If this is the first device you have paired with the GarminConnect app, follow the on-screen instructions.• If you have already paired another device with the GarminConnect app, from the or menu, select GarminDevices > Add Device, and follow the on-screeninstructions.Device InformationUser Replaceable BatteriesWARNINGSee the Important Safety and Product Information guide in theproduct box for product warnings and other importantinformation.Replacing the Speed Sensor BatteryThe device uses one CR2032 battery. The LED flashes red toindicate a low battery level after two revolutions.1 Locate the circular battery cover on the front of the sensor.2 Twist the cover counter-clockwise until the cover is looseenough to remove.3 Remove the cover and the battery .4 Wait 30 seconds.5 Insert the new battery into the cover, observing polarity.NOTE: Do not damage or lose the O-ring gasket.6 Twist the cover clockwise so that the marker on the coveraligns with the marker on the case.NOTE: The LED flashes red and green for a few secondsafter battery replacement. When the LED flashes green andthen stops flashing, the device is active and ready to senddata.Replacing the Cadence Sensor BatteryThe device uses one CR2032 battery. The LED flashes red toindicate a low battery level after two revolutions.1 Locate the circular battery cover on the back of thesensor.2 Twist the cover counter-clockwise until the marker points tounlocked and the cover is loose enough to remove.3 Remove the cover and the battery .4 Wait 30 seconds.5 Insert the new battery into the cover, observing polarity.NOTE: Do not damage or lose the O-ring gasket.6 Twist the cover clockwise until the marker points to locked.NOTE: The LED flashes red and green for a few secondsafter battery replacement. When the LED flashes green andthen stops flashing, the device is active and ready to senddata.Speed Sensor and Cadence SensorSpecificationsBattery type User-replaceable CR2032, 3 VBattery life Approximately 12 mo. at 1 hr./daySpeed sensor storage Up to 300 hr. of activity dataOperating temperature range From -20º to 60ºC (from -4º to 140ºF)Wireless frequency/protocol 2.4 GHz @ 4 dBm nominalWater rating IEC 60529 IPX7**The device withstands incidental exposure to water of up to 1 mfor up to 30 min. For more information, go to www.garmin.com/waterrating.TroubleshootingMy device will not connect to the sensorsIf your device will not connect to the speed and cadencesensors, you can try these tips.• Rotate the crank arm or wheel two revolutions to wake up thesensor.The LED flashes green for five seconds to indicate activity.The LED flashes red to indicate a low battery level.• Replace the battery if the LED does not flash after tworevolutions.• Enable Bluetooth technology on your smartphone or Garmindevice.• Pair the sensor with your device using ANT+ technology.2 Device Information