Wahoo Fitness Wahoo Cycling Speed/Cadence Sensor (Wahoo Fitness WFSC01), Wahoo Fitness iPhone Running and iPhone Cycling Bluetooth Smart Products
Wahoo Cycling Speed/Cadence Sensor
Rating (6 review(s))

Collect crucial bike speed and cadence data during your workout. Easy to attach to most bikes, even easier to read the data on your iPhone when paired with the Wahoo Key or Wahoo Bike Case.

Item # WFSC01

Price: $39.99

Qty:
  • tethered, independent speed and cadence sensors for optimal placement of each
  • durable, easy to use
  • small with low drag profile
  • can be modified for use with recumbent bikes
    tether is spliced and extended
  • sends and receives signals up to 10 feet
    unobstructed
  • compatible with any ANT+ receiving device
  • waterproof up to 5 feet
  • replaceable 3 volt CR2032 coin cell battery
  • Wireless
    ANT+ ultra low power technology license free, 2.4 GHz ISM band operation
  • Weight
    Unit: 18 grams {0.6 ounces}
    Accessories: 12 grams {0.4 ounces}
    Total: 30 grams {1.0 ounces}
What is it?
  • Your Wahoo Fitness bicycle Speed and Cadence Sensor is a device that determines your tire rotation rate (speed) and pedal rotation rate (cadence).

How do I use it? View Image Instructions
  • Attach the Speed/Cadence Sensor to the top of the rear chain stay on the side opposite the drive train - with the Speed Sensor to the back, Cadence Sensor toward the front. Test fit so that the Cadence Sensor is aligned 3/4 up the crank arm (toward pedal) when the crank arm passes the rear chain stay and then extend the Speed Sensor back so that the tether is fully extended.
    1. To attach the Speed Sensor, loosely clamp Speed Sensor to frame with two enclosed cable ties to the frame aligned to inside of the back wheel.
    2. To attach Cadence Sensor, loosely attach Cadence Sensor with two enclosed cable ties to the frame closest to the pedal arm.
  • Attach Pedal Magnet. Place the Pedal Magnet on the crank arm so that it is aligned with the Cadence Sensor. Attach pedal magnet using two enclosed cable ties to the crank arm. Rotate Cadence Sensor toward Pedal Magnet so that it is as close as possible. Do not tighten cable ties until you test to ensure consistent readings.
  • Attach Spoke Magnet. Unscrew the Spoke Magnet and attach to a spoke by sandwiching the spoke between the screw/magnet and its plastic housing, ensuring it is aligned with the line on the Speed Sensor. Rotate Speed Sensor toward Spoke Magnet so that it is as close as possible.
  • Turn the crank several times to ensure each sensor is working and the magents are aligned properly. Tighten all cable ties.

How do I wake the sensor up?
  • Your Wahoo Fitness Speed/Cadence Sensor ‘sleeps’ with inactivity and ‘awakens’ when readings begin so a few turns of your bicycle crank are be required before the sensor begins emitting data.

How do I pair it with my device? Doesn't it need a tire size?
  • Each Wahoo Fitness Sensor has a unique identification code and can be uniquely paried with a display device or reader so that it will always be recognized when it is activated and within range. In addition, your Speed Sensor requires a tire size calibration to determine accurate speed information. Since each reader is unique, you should reference the instructions of your reader for pairing and sizing techniques.

How do I change the battery?
  • The battery in your Wahoo Fitness Speed/Cadence Sensor is located behind a cover on the back of your Sensor and can be replaced by placing a coin in the slot and turning the cover 1/4 turn counterclockwise. Replace with a 3 volt CR2032 battery (contact a local waste handling group for proper disposal of old battery). Wait 45 seconds before installing the new battery to ensure the electronics fully reset.

  Good as any, Tuesday, February 14, 2012


By: Gary

My first speed/cadence (S/C) sensor stopped working after a few months, but Wahoo support replaced it for me free (So I LOVE their support!) All makers of these sort of sensors (e.g., Garmin) require very close proximity of the magnets to the sensors so installation is key. I installed my S/C sensor upside down and it works just fine - perfectly, really. The reason I do this is because the spokes are moving in a direction that would be very damaging to both sensor and wheel if the sensor moved too close to the spoke. By mounting it upside-down, I am in no danger of the sensor tearing up my wheel. Like I say, it works just as well for me this way. I wish someone could make a unit that did not have to have the magnet sooooooo close to the sensor, but nobody does. I highly recommend Wahoo sensors!

  the best i've ever had, Wednesday, December 28, 2011


By: matthew

These days almost everyone has a smartphone of one make or another. And I myself dont go on a ride without my phone (obvious safety issues), so why not combine your phone with some small and very lite cycling technology? The case is nice and sturdy, it locks well so if it falls it doesnt look like you will have to go out and buy a new one. The speed/cad sensor is small and easy to install. Plus its all wireless, woo-hoo.

  Best Fitness App/Product I've Used, Friday, July 01, 2011


By: Mike

I've had a variety of bike computers and fitness products and this is by-far the best. It installs like any other bike computer and provides more data in an easy to read display than anything out there. I can upload the data before I'm off the bike and have it on my PC before I get home - Fantastic!


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