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Adjust angle and position of sensor to achieve recommended 
gap distance range and align sensing points.  

IMPORTANT NOTE

Please make sure the Battery Cover is 
securely sealed to prevent unexpected 
water leakage

GAP 

<

 

10

 mm 

GAP 

<

 

10

 mm 

Turn the crankarm clockwise to pass the Cadence 

Sensor Sensing Point. The Test Key LED should start 

flashing if the device is installed properly.

Press the Test Key on the Sensor to enter Test 

Mode for 60 seconds.

Speed & Cadence Sensor

User’s Guide

CS1505

5

6

Test Speed and Cadence Sensor with Magnet Sets

Assemble and Change Battery

Adjust Sensor and Magnet Sets

4

Spin the wheel counterclockwise to pass the Speed 

Sensor Sensing Point. The Test Key LED should start 

flashing if the device is installed properly.

Use a coin to unclinch the Battery Cover.

Lithium Battery ( CR2032 )

O-ring : waterproof component

Remove the battery inside with a 

new one, then close the battery 

cover onto the device.

After entering Test Mode and tested

successfully, use the needle nose plier

to help tighten the zip tie and make sure

the Sensor is securely installed on the

left rear chainstay. Then use the plier 

to trim off excessive zip tie.

 Caution

1. The device can be used in rain but should not be used underwater.
2. The position of Sensor and gaps between Sensor and magnets 

     should be checked periodically.

     

3. Do not use corrosive chemicals to clean the device.
4. Do not disassemble the device.

Connect to Speed & Cadence Sensor

Supported Apps can be downloaded at iTunes App Store. After 

installing the downloaded App, follow the instructions in App to 

complete Bluetooth connection to the Speed and Cadence Sensor.

Note: 

The Bluetooth interface is disabled by default. Bluetooth 

connection will be established when the Bike is moving and 

Speed or Cadence data is detected. 

Supported Devices & Software

Please visit our manufacturers website for a complete list of Supported 

Apps and Compatible devices 

http://www.jarvmobile.com/support.asp 

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