Powr Labs bike cadence sensor with blue pairing light
Powr Labs bike cadence sensor – Smallest and lightest cadence sensor on the market: 1.38 in (35 mm) across, 10.5 grams, 0.25 in (6.4 mm) thick
Powr Labs bike cadence sensor – 3 easy install options: removable crank bracket, 3M adhesive direct mount, removable shoe mount
Powr Labs bike cadence sensor – Pro build quality: real-time cadence, up to 6-month battery life, 65 ft range, USA based, athlete owned
Powr Labs bike cadence sensor – Made for outside: IPX67 waterproof and dust-proof, rugged inside or outside
Powr Labs bike cadence sensor – Easy pairing and broad compatibility: ANT+ and Bluetooth 5.0 for Garmin, Wahoo, Polar, Hammerhead and Bryton computers and Zwift, TrainerRoad, Polar Beat and Garmin Connect apps
3.8 · 93 ratings
✓ IP67 waterproof & dustproof✓ 12-month no-questions warranty✓ Athlete owned, Park City UT

Powr Labs® RPM Bike Cadence Sensor

Smallest & lightest · ANT+ & Bluetooth 5.0 · IP67

The smallest, lightest Bluetooth and ANT+ cadence sensor for spin bikes and road bikes, with three install options.

$34.99

Bluetooth & ANT+
Smallest & lightest in class
3 install options: crank, band or shoe
IP67, all-weather
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Product details

A tiny, accurate cadence sensor that pairs with Zwift, Wahoo, Garmin, Polar and TrainerRoad, and installs on a crank arm, a band or your shoe.

Why athletes pick it

  • Smaller and lighter. We built the smallest, lightest spin bike cadence sensor we could, so you never feel it on the crank.
  • Accuracy in all weather. Tracks cadence in real time over Bluetooth or ANT+ with an IP67 rating for rain, sweat and dust.
  • Three easy install options. Mount with the 3M adhesive, strap it with the removable bands and crank bracket, or wear it on your cycling shoe.
  • Pairs with bike apps. Zwift, Wahoo, Polar, Garmin Connect, TrainerRoad and more over Bluetooth.
  • Pairs with bike computers and trainers. Garmin Edge, Wahoo Elemnt, Kickr and most ANT+ hardware.

Works with

Zwift, Wahoo, Garmin, Polar, TrainerRoad, Peloton app, Kickr and any ANT+ or Bluetooth cadence profile.

Details

A flashing blue indicator confirms the connection, so there is no guesswork when pairing. Replaceable coin-cell battery.

12-month no-questions-asked warranty. Designed and tested in Park City, Utah. Questions? Email support@powr-labs.com.

Specifications
ConnectivityANT+ and Bluetooth 5.0 (dual-band)
Size1.38 in (35 mm) across, 0.25 in (6.4 mm) thin
Weight10.5 g
BatteryReplaceable lithium coin cell, up to 6 months
Water ratingIP67 waterproof and dustproof
Wireless rangeUp to 65 ft
MountingCrank bracket with bands (removable), 3M adhesive direct mount, or shoe mount
Pairing indicatorBlue LED flashes while pairing
Compatible withZwift, Wahoo, Garmin, Polar, TrainerRoad, Peloton app, Strava and most bike computers
Warranty12 months, no questions asked
What's in the box
  • Cadence sensor with battery installed
  • Crank bracket
  • Mounting bands in multiple sizes
  • 3M adhesive direct mount
Shipping, returns & warranty

Ships from the USA within 1–2 business days. 30-day returns and a 12-month no-questions-asked warranty on every product. Shipping policy · Refund & warranty

Pairing & support

Step-by-step pairing guides for Peloton, Zwift, Strava, Garmin, Wahoo and Apple Watch, plus troubleshooting. Open the guides or email support@powr-labs.com.

Why athletes pick it

Built for the way you train

Smallest and lightest, on purpose

Smallest and lightest, on purpose

Nobody wants a bulky cadence pod on their crank. We spent almost a year shrinking it to 1.38 in across, 0.25 in thin and 10.5 grams.

Three ways to mount it

Three ways to mount it

Removable crank bracket with sized bands, semi-permanent 3M adhesive direct mount, or on your cycling shoe so one sensor follows you across bikes.

Pairs with everything, in any weather

Pairs with everything, in any weather

Dual ANT+ and Bluetooth 5.0 connect to Zwift, Wahoo, Garmin, Polar, TrainerRoad and your bike computer, and the IP67 seal shrugs off rain, mud and sweat.

Features

Built for the way you train

Powr Labs bike cadence sensor, born in the mountains of Park City, Utah and battle-tested with the toughest athletes
Smaller and lighter: 1.38 in (35 mm), 10.5 grams, 0.25 in (6.4 mm) thin, almost a year of development to make the smallest cadence sensor
Water and weather proof: built water-tight and sealed to stand up to rain, dust, sweat and anything the outdoors throws at your bike
Easy pairing: ANT+ and Bluetooth 5.0, works with popular bike computers and fitness apps
  • Pairing light

    Pairing light

    Take the guesswork out of pairing. The flashing blue indicator light tells you the moment everything is connected.

  • Crank bracket install, removable and swappable

    Crank bracket install

    Not ready for a permanent install? Multiple sized bands and the crank bracket give a sturdy mount you can remove or swap between bikes.

  • 3M adhesive direct mount, semi-permanent

    3M adhesive direct mount

    Want it flush and out of the way? The extremely strong, durable stick-on option gives a semi-permanent direct mount on the crank arm.

  • Shoe mount, removable

    Shoe mount

    Ride more than one bike? Mount it on your cycling shoe or laces with the elastic bands and bracket, and swap between shoes in seconds.

Compatibility

Works with the apps and devices you already use

Standard ANT+ and Bluetooth Smart (BLE) heart rate profiles mean it pairs like any Polar, Garmin or Wahoo strap, with 400+ apps and devices. Here are the ones our customers use most.

Brand names belong to their owners; Powr Labs is not affiliated with them. Takes about two minutes to pair. Step-by-step pairing guides →

Reviews

What athletes say

3.8
93 ratings
Verified purchase reviews of this product, shown unedited.
  • 5 star50%
  • 4 star15%
  • 3 star13%
  • 2 star7%
  • 1 star15%
Marshall L.Verified purchaseMay 2023

Works well and is thinner than other brands I've tried

Using this on an eMTB (Trek Rail 9.7 for reference). Had another common brand (Moo) that I was using on my previous bike, but on my new one the space between the crank arms and the bike frame is narrower and the sensor couldn't pass between them. Flipping that sensor around it was hard to find a spot on the crank arm where my shoe wouldn't hit it (and that is in fact how I lost that sensor). With the Powr Labs sensor, it's a bit thinner and fits between the crank arm and frame without any issues.

DragonVerified purchaseApr 2023

Works

Got this for use on my trainer. Connected to Polar Grit without issue. Simple install.

RFVerified purchaseJan 2023

Works with peloton app

I first bought a Wahoo sensor. It didn’t work. They sent me two more sensors and they didn’t work. Sent several emails to wahoo tech support - still didn’t work. Bought the powr labs and it worked right away. And it is $15 cheaper than the wahoo sensor.

YuenXVerified purchaseJun 2022

Really small cadence AND cheaper than Wahoo Cadence

I bought a Powr Labs heart rate monitor chest strap about 1.5 years ago as part of my New Year's resolution to lose weight, and here I am at it again trying to get rid of my COVID-19-induced weight gain. Working out outside is my preferred way to get some fitness in, and biking is fun. My Santa Cruz Heckler mountain bike does not come with a speed or rotation-per-minute (RPM) cadence sensor, however, and so I had relied on my Samsung Galaxy Watch and smartphone app to get an estimate of my workouts. So, I started looking for a cadence sensor and was about to buy the Wahoo one until I saw that Powr Labs came out with one. It had zero reviews at the time I bought it. Should I try it? Well, their HRM strap gave my broken Garmin a good run for its money, so, I went ahead and got one.

PROS
- Really small. Dare I say that it is "cute"?
- Less expensive and much smaller than Wahoo
- Mounts the same way as the Wahoo
- Worked with my Garmin, Strava, Polar, and even Wahoo's own apps due in part to its compatibility with the ANT+ and Bluetooth standards
- LED light to indicate that it is on
- US-based company and support
- IP67 water resistance
-- Cadence can be dropped into water for up to

Customer photo from YuenXCustomer photo from YuenXCustomer photo from YuenXCustomer photo from YuenX
Konrad R.Verified purchaseFeb 2024

Bring some fun back into your old spin bike -- Wahoo, Zwift, etc.

The powr-labs CADENCE sensor attaches nicely to the inside of one of the two pedals. You can quickly test it with the wahoo app on your android phone/tablet. The app also runs on iPhone, Mac and Windows. The sensor came with plenty of o-ring style bands, a 3M double-sided sticky tape and a retaining clip.

Why I did not give this product five stars:
With a quick shake, the sensor should blink blue right above the white dot that has the Bluetooth and ANT+ symbol. The sensor came with a dead CR2032 battery. I had to buy a new one and open the case to replace the one it came with.

I would also recommend a powr-labs SPEED sensor and a power-labs Heart Rate Monitor for this project.

Customer photo from Konrad R.Customer photo from Konrad R.
CirqueriderVerified purchaseJan 2024

Can't Open Case to Change Battery

I have no problems changing a CR2032 battery, but after several attempts to open the case, it didn't open up and I'm concerned how much force to use. We have several cadence sensors and can at least change the battery in those. The Powr Labs cadence sensor did work properly after attaching to the bike, even though I did not see light flashing after shaking the sensor. Instructions do not suggest how to open the case, and this problem seems to be a common complaint in the reviews.

terramuellerVerified purchaseSep 2022

Should not have a LOW BATTERY right of the box

Well, it connected to my garmin venu super easily, and well I'd like to say it works well because the BATTERY WAS LOW RIGHT OUT OF THE BOX.

I thought I could get Maybe a quick ride out of it to check the accuracy vs my proform bike, but alas...it only made it 5 minutes and is completely dead.

So now i have to make an unnecessary trip to town to buy a battery for something that is brand new and that I bought online and waited over a week for so that I didn't have to go town.....

Ridiculous

catherine L.Verified purchaseNov 2022

Impossible to open to replace battery. Completely died less than 6 months later.

I got this in the middle of June 2022. I barely used it (maybe less than a dozen times). Tried using it again after 2 months of not using it at all. The battery seemed dead as no light indicator would come on after shaking it. It was nearly impossible to open the tracker in order to replace the battery. After reaching out to customer support, they told me to use a screwdriver or a nail picker, which they said another customer was successful using. How odd! They don't officially have an easy way to open the device and have resorted to telling other customers to use tools that another customer used. After breaking 4 nails, I was finally able to pop open the device with a metal nail picker. However, after replacing with a brand new battery it still doesn't work! It lit up for a few seconds and went dead again and won't pair. Now I can't get the device to open again in order to retrieve the brand new batter, even using the nail picker. I've spent way too much time on this useless device. I'm regretting trying to save $ by buying this off brand. Should have spent more on a well known brand. What a waste of time and $.

Questions

Before you buy

Does it work with Peloton?

Yes, with the Peloton app on a spin bike, road bike or trainer that does not report its own cadence. Peloton Bikes and Bike+ measure cadence natively, so you do not need an extra sensor there.

How do I install it?

Three options: strap it to the crank arm with the bracket and one of the sized bands (removable, swaps between bikes), stick it flush to the crank with the 3M adhesive mount (semi-permanent), or mount it on your cycling shoe with the elastic band so it follows you from bike to bike.

How do I pair it?

Spin the crank or give the sensor a shake and the blue pairing light starts flashing. Open the sensors menu in your app or bike computer, add a cadence sensor, and select Powr Labs. Pair once and it reconnects automatically on every ride.

What battery does it use and how long does it last?

A replaceable lithium coin cell, installed and ready to ride out of the box. Expect up to 6 months of regular riding before you swap it.

Can I use it on a spin bike or stationary bike?

Yes. The crank bracket fits most crank arms on indoor bikes, and the shoe mount works on any bike at all, including bikes with enclosed cranks.

Is it waterproof?

Yes. It is sealed to IP67, so rain, puddles, mud and sweat are fine indoors or out.

Does it measure speed too?

No, this is a dedicated cadence sensor. For wheel speed, add the Powr Labs bike speed sensor on the hub.

What is the warranty and return policy?

12-month no-questions-asked warranty and 30-day returns, with USA-based support in Park City, Utah.

Full setup, troubleshooting and pairing guides →

Specifications

The details

ConnectivityANT+ and Bluetooth 5.0 (dual-band)
Size1.38 in (35 mm) across, 0.25 in (6.4 mm) thin
Weight10.5 g
BatteryReplaceable lithium coin cell, up to 6 months
Water ratingIP67 waterproof and dustproof
Wireless rangeUp to 65 ft
MountingCrank bracket with bands (removable), 3M adhesive direct mount, or shoe mount
Pairing indicatorBlue LED flashes while pairing
Compatible withZwift, Wahoo, Garmin, Polar, TrainerRoad, Peloton app, Strava and most bike computers
Warranty12 months, no questions asked

What's in the box

  • Cadence sensor with battery installed
  • Crank bracket
  • Mounting bands in multiple sizes
  • 3M adhesive direct mount

Need a longer strap or a spare? Replacement straps are available and fit most chest heart rate sensors.