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ANT+ speed/cadence sensor kit

Reference : 8181211

ANT+ Speed/Rate Sensor, Cycle Computer Accessory

measuring your speed and cadence (pedalling rate). Kit for a second bike, 2.4 GHz wireless ANT+ coded transmission. Speed/rate sensors kit for COUNT7 cyclometer. ANT+ 2.4GHz coded wireless transmission. Compatible with all computers with ANT+ technology.

To view our full range visit our cycle computers category.

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Product benefits

    • Accuracy / precision
    • Coded wireless digital transmission (ANT+ 2.4 GHz technology).
    • Compatibility
    • Compatible with all cyclometers with ANT+ technology
    • Easy assembly / dismantling
    • Tool-free, fast and easy mounting on the chainstays.
  1. Guarantee : 2 Years

your reviews

3.5 / 5

28 reviews

19 people recommend this product

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Good value

Very reasonable price

Battery dead out of the box


  (United Kingdom)

40-49 years old    Man

3 5

used for 2 to 8 weeks Compared to other makes this makes good value, but check the battery before you leave the shop. Initial impressions are the quality is not on par with the other makes, but if I get a couple of years out of it, and it auto pauses less than my Garmin one I will be happy.

Another dead battery

Good value. Simple setup with Garmin 500.

Dead battery supplied.


  (United Kingdom)

30-39 years old    Man

3 5

used for 1 week or less Great value product! However as another reviewer noted this new item was supplied with a dead battery. Once replaced and "green" test light visible then the sensor was simple to detect/pair with my Garmin Edge 500 unit.

Supplied with dead battery

good value

dead battery out of the box & poor instructions


  (United Kingdom)

50-59 years old    Man

3 5

used for More than 1 year Once a new cr2032 battery was fitted the test button gave a green light from the led. It then paired easily with my Bryton Rider 40. Instructions do not state why why both rubber straps and zip ties are supplied, and whether the rubber strap needs to be fitted in a particular way. Having wirrten this I have just worked out that they do need to be fitted a particular way, with the ribbed section going underneath the foot of both units.

Does not connect to Tacx app on my Galaxy Note 3

Good price

Does not connect to the Tacx app


  (United Kingdom)

30-39 years old    Man

3 5

used for 2 to 8 weeks The Ant+ sensor will not connect to the Tacx app which I wish to use with my Tacx Blue Motion turbo trainer. I have the Samsung Galaxy Note 3 which is Ant+ compatible.

Needs improved seals


cannot be used in wet weather


  (United Kingdom)

40-49 years old    Man

2 5

used for 3 to 6 months Had two of these on separate bikes and both failed within months with water entering the battery compartment. The sealing of the unit is only good for dry or indoor use.

Response of the brand

Dear Sir,
Thank you for your feedback.  I'm sorry to read that the sensor has not withstood wet weather.
I will forward this to the product manager at b'Twin.
Peter Lazarus UK Market Manager DECATHLON

Information / Concept / Technology

Restricted use :

Only compatible with computers with ANT+ technology.

this product has been designed with following concepts

GEONAUTE me, my environment, my community