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7
IMPORTANT INFORMATION
CARE AND MAINTENANCE
Keep the sensor clean. Clean it with a mild soap and water solution, and rinse off with clean water. Dry carefully with a soft
towel. Never use alcohol or any abrasive material, such as steel wool or cleaning chemicals. Do not immerse the sensor in
water.
Your safety is important to us. Make sure that you can turn your handlebars normally and that the cable wires for brakes or
gears do not catch the bike mount or sensor. Also, make sure that sensor does not disturb pedaling or using the brakes or
gears. While riding your bike, keep your eyes on the road to prevent possible accidents and injury. Avoid hard hits as these
may damage the sensor.
Replacement magnet sets can be purchased separately.
BATTERY
The battery cannot be replaced. The sensor is sealed in order to maximize mechanical longevity and reliability. You can
purchase a new sensor from the Polar online store at www.polar.com or check the location of nearest retailer at
www.polar.com/en/store-locator.
The battery level of your sensor is displayed on the receiving device if it supports Bluetooth ® Battery Service.
To increase battery life, the sensor goes into standby mode in thirty minutes if you stop cycling and the magnet is not
passing the sensor.
FREQUENTLY ASKED QUESTIONS
What should I do if...
...the speed reading is 0 or there is no speed reading while cycling?
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Make sure the position and distance of the sensor to the magnet are appropriate.
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Check that you have activated the speed function in the receiving device. For further information, see the user
guidance material of the receiving device or mobile application.
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Try keeping the receiving device in a bike mount on the handlebar. This may improve the connection.
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If the 0 reading appears irregularly, this may be due to temporary electromagnetic interference in your current
surroundings.
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If the 0 reading is constant, the battery may be empty.
...there are irregular speed, distance or heart rate readings?
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Disturbance may occur near microwave ovens and computers. Also WLAN base stations may cause interference
when training with Polar Speed Sensor. To avoid erratic reading or misbehaviors, move away from possible sources
of disturbance.
... I want to pair the sensor with the receiving device before installation?
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Follow the instructions in the user guidance material of the receiving device or mobile application. Instead of rotating
the crank/wheel, activate the sensor by moving it back and forth close to the magnet. The flashing red light indicates
that the sensor is activated.
How do I know...
... if the sensor is transmitting data to the receiving device?
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When you begin cycling, a flashing red light indicates that the sensor is alive and it is transmitting speed signal. As you
continue cycling, the light stops flashing.