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Garmin Speed Sensor 2 / Cadence Sensor 2 User ManualHome » Garmin » Garmin Speed Sensor 2 / Cadence Sensor 2 User ManualContents [ hide
1 Garmin Speed Sensor 2 / Cadence Sensor 22 Introduction
2.1 Installing the Speed Sensor
2.2 Installing the Cadence Sensor
2.3 Pairing the Sensors with Your Device
2.4 Garmin Connect™
3 Device Information
3.1 User Replaceable Batteries
4 Speed Sensor and Cadence Sensor
Speciﬁcations
5 Troubleshooting
5.1 My device will not connect to the sensors
6 Documents / Resources
7 Related Posts

Garmin Speed Sensor 2 / Cadence Sensor 2

2019 Garmin Ltd. or its subsidiaries
All rights reserved. Under the copyright laws, this manual may not be copied, in whole or in part, without thewritten consent of Garmin. Garmin reserves the right to change or improve its products and to make changes in
the content of this manual without obligation to notify any person or organization of such changes orimprovements. Go to www.garmin.com for current updates and supplemental information concerning the use ofthis product.
Garmin®, the Garmin logo, and ANT+® are trademarks of Garmin Ltd. or its subsidiaries, registered in the USAand other countries. Garmin Connect™ is a trademark of Garmin Ltd. or its subsidiaries. These trademarks may
not be used without the express permission of Garmin. Apple® is a trademark of Apple Inc., registered in the U.S.
and other countries. The BLUETOOTH® word mark and logos are owned by the Bluetooth SIG, Inc. and any useof such marks by Garmin is under license. Other trademarks and trade names are those of their respectiveowners. This product is ANT+® certiﬁed. Visit www.thisisant.com/directory for a list of compatible products andapps.

Introduction
WARNING:
See the Important Safety and Product Information guide in the product box for product warnings and otherimportant information. Always consult your physician before you begin or modify any exercise program.
Installing the Speed Sensor

NOTE: If you do not have this sensor, you can skip this task.
TIP: Garmin® 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: The LED ﬂashes green for ﬁve seconds to indicate activity after two revolutions.
Installing the Cadence Sensor

NOTE: If you do not have this sensor, you can skip this task.
TIP: Garmin recommends you secure your bike on a stand while installing the sensor.
1. Select the band size that ﬁts your crank arm securely. The band you select should be the smallest one thatstretches across the crank arm.
2. On the non-drive side, place and hold the ﬂat side of the cadence sensor on the inside of the crank arm.
3. Pull the bands around the crank arm, and attach them to the hooks on the sensor.

4. Rotate the crank arm to check for clearance. The sensor and bands should not contact any part of your bike orshoe.
NOTE: The LED ﬂashes green for ﬁve seconds to indicate activity after two revolutions.
5. Take a 15 minute test ride and inspect the sensor and bands to ensure there is no evidence of damage.
Pairing the Sensors with Your Device

The ﬁrst time you connect a wireless sensor to your device using ANT+® or Bluetooth® technology, you must pairthe device and sensor. After they are paired, the device connects to the sensor automatically when you start anactivity and the sensor is active and within range.
NOTE: The pairing instructions diﬀer for each Garmin compatible device. See your owner’s manual.
Bring the Garmin compatible device within 3 m (10 ft.) of the sensor.
Stay 10 m (33 ft.) away from other wireless sensors while pairing.
Rotate the crank arm or 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.
If available, pair the sensor using ANT+ technology.
NOTE: The sensor can pair with up to two Bluetooth devices and any number of ANT+ devices. After you pairthe ﬁrst time, your Garmin compatible device automatically recognizes the wireless sensor each time it isactivated.
Garmin Connect™

Your Garmin Connect account allows you to track your performance and connect with your friends. It gives youthe tools to track, analyze, share, and encourage each other. Record the events of your active lifestyle. You cancreate your free Garmin Connect account when you pair your device with your phone using the Garmin Connect
app. Store your activities: After you complete a ride with your device, you can sync with the Garmin Connect app
to upload that activity and keep it as long as you want. Analyze your data: You can view more detailed information
about your ﬁtness and indoor activities, including time, distance, calories burned, speed charts, and customizable
reports.

Share your activities:
You can connect with friends to follow each other’s activities or post links to your activities on your favorite social
networking sites.
Manage your settings:
You can customize your device and user settings on your Garmin Connect account.

Pairing the Speed Sensor With Your Smartphone
The speed sensor must be paired directly through the Garmin Connect app, instead of from the Bluetooth settings
on yoursmartphone.
1. From the app store on your smartphone, install and open the Garmin Connect app.
2. Bring your smartphone within 3 m (10 ft.) of the sensor.
NOTE: Stay 10 m (33 ft.) away from other wireless sensors while 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 Connect account:
If this is the ﬁrst device you have paired with the Garmin Connect app, follow the on-screen instructions.
If you have already paired another device with the Garmin Connect app, from the or menu, select Garmin
Devices > Add Device, and follow the on-screen instructions.

Device Information
User Replaceable Batteries

WARNING: See the Important Safety and Product Information guide in the product box for product warnings andother important information.
Replacing the Speed Sensor Battery
The device uses one CR2032 battery. The LED ﬂashes red to indicate 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 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 so that the marker on the cover aligns with the marker on the case.
NOTE: The LED ﬂashes red and green for a few seconds after battery replacement. When the LED ﬂashes

green and then stops ﬂashing, the device is active and ready to send data.
Replacing the Cadence Sensor Battery
The device uses one CR2032 battery. The LED ﬂashes red to indicate a low battery level after two revolutions.
1. Locate the circular battery cover on the back of the sensor

2. Twist the cover counter-clockwise until the marker points to unlocked 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 seconds after battery replacement. When the LED ﬂashes
green and then stops ﬂashing, the device is active and ready to send data.

Speed Sensor and Cadence Sensor Speciﬁcations

Battery typeUser-replaceable CR2032, 3 V

Battery life

Approximately 12 mo. at 1 hr./day

Speed sensor storage

Up to 300 hr. of activity data

Operating temperature range

From -20º to 60ºC (from -4º to 140ºF)

Wireless frequency/protocol

2.4 GHz @ 4 dBm nominal

Water rating

IEC 60529 IPX71TroubleshootingMy device will not connect to the sensors

If your device will not connect to the speed and cadence sensors, you can try these tips.
Rotate the crank arm or 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.
Replace the battery if the LED does not ﬂash after two revolutions.
Enable Bluetooth technology on your smartphone or Garmin device.
Pair the sensor with your device using ANT+ technology.
NOTE: If the sensor is already paired with two Bluetooth devices, you should pair using ANT+ technology orremove a Bluetooth device.
Remove your device from the Garmin Connect app or your Garmin device to retry the pairing process. If you
are using an Apple® device, you should also remove your device from the Bluetooth settings on yoursmartphone.
Limited Warranty
The Garmin standard limited warranty applies to this accessory. For more information, go to
www.garmin.com/support/warranty.html.

Documents / Resources

Garmin Speed Sensor 2 / Cadence Sensor 2 [pdf] User Manual620226, Sensor 2

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