MageneOutdoor/Indoor Speed/Cadence Sensor for Cycling, Wireless Bluetooth/Ant+ Bike Computer RPM Sensor for Road Bike or Spinning Bike and Trainers Compatible with Onelap, Wahoo Fitness, Zwift, Strava

I use the Magene speed/cadence and Wahoo heart rate monitor with Cadence App. You can see the speed sensor literally taped to my Spinner front wheel. In the settings of Cadence you can adjust the wheel size for accuracy. I had a analog Cateye on my spin bike for years. The speed and cadence of the Magene sensors essentially mirrors what the Cateye readouts were. I will say the refresh rate is a little slow at times but very functional and accurate in my opinion. I like that there are no more wires on my bike and the functionality of using my phone for the monitor and storing the data from my workouts. If you choose to use Cadance App know this. When you add the sensors they will both show up side by side and you will think your done. You can select one sensor for each "add a sensor" so you must add them both again, select speed on one and cadance on the other and all is good. I find the Magene sensors to be a great value and I get accurate data on how I am performing in my workouts. In the images you will see the installation and the riding screen and the data output.

I bought this sensor to use in cadence mode with the WorkOutdoors App which I use while bike riding. I had no trouble setting up the sensor or pairing it to the app. It was immediately recognized and is passing the cadence metrics I was hoping to access. This unit is a great buy.

I purchased the two-pack so that I could use one as a speed sensor, and one as a cadence sensor. I intended to use them with my Garmin Edge 1030 Plus cycling computer and GPS.I was skeptical when I ordered. The Garmin Speed Sensor 2 and Cadence Sensor 2 bundle costs more than twice the price of this aftermarket two-pack. So I assumed something would be lacking. Maybe I wouldn't be able to pair both at the same time (speed and cadence) as I had seen in some reviews. Maybe the speed sensor would require manual calibration. Or maybe they would be substantially inferior quality. None of these fears turned out to be warranted.Unpacking: The two sensors were in one anti-static wrap, and included in the package were two rubberized backing pads, and four elastic band mounting straps (two of each of two sizes).Initializing: After opening the battery compartments, you must remove a piece of packaging that prevents the battery from discharging prior to use. Upon closing the compartments again, one sensor initialized with a green LED, and the other red. The LED color tells which mode (speed or cadence) the sensor is in. It's important to pay attention to which is which so that you install the correct one on the wheel hub, and the correct one on the left crank arm. Initializing the units was easy. If one had initialized in the wrong mode, simply removing and reinstalling the battery will switch it back to the desired mode.Installation: Insert the rubberized backing strip, then strap the speed sensor around the bike's wheel hub, and the other around the left crank arm for cadence. The straps fit correctly. Compared to the Garmin unit, the cadence sensor fits exactly the same. The Garmin speed sensor incorporates a hub form-fitting rubberized housing integrated into the strap. The aftermarket speed sensor does not have the form-fitting housing. Yet it stays secure around the hub none the less. So the Garmin Speed Sensor 2's rubberized housing is a nice touch (at 2x the price), but not necessary.Pairing: On the Garmin Edge computer tap settings, sensors, add a sensor. Select speed for the hub-mounted sensor. Give the bike wheel a spin. The sensor will be displayed with some ID number. Tap that one, and tap add. If you want, go back in and edit the sensor name to change the numeric ID to a name that is recognizable. This is particularly useful if you have sensors on multiple bikes. For the cadence sensor repeat the process: Settings, Sensors, Add a Sensor, Cadence, spin the cranks, then tap the ID of the sensor that pops up. Optionally edit its name so it's recognizable.One thing that I feel is worth mentioning: I expected that I would have to manually calibrate the wheel size. The Garmin Speed Sensor 2, when paired with a new enough Garmin Edge (520, 520+, 820, 530, 830, 1030, 1030+, and possibly others) will auto-calibrate the wheel size. But I assumed that feature wouldn't work with this aftermarket sensor. Nevertheless, I set it to auto calibration mode and went for a ride. After about a mile the Garmin Edge 1030 Plus indicated that auto-calibration of the speed sensor was complete. So to my pleasant surprise, this aftermarket sensor will work with Garmin's auto-calibration for wheel size. Great!Test ride: I took this set for a brief five mile ride, and then looked at the results. There were no drop-outs in cadence other than when I wasn't actually pedaling anyway. Speed is harder to verify since the GPS can calculate speed without the speed sensor. The sensor just makes it more accurate. But there were no notifications of losing a connection to a sensor, so I assume speed was working fine. Certainly the GPS home screen did indicate that both were connected and sending data. The speed and cadence data seemed indistinguishable from when I use Garmin name-brand sensors on my other bike.Comparison to Garmin Speed Sensor 2 and Cadence Sensor 2: I have both the Garmin sensors and these aftermarket sensors. They both seem to work the same; they turn on when the wheel or cranks spin, and shut off a minute or so after I discontinue use. Their estimated battery life is similar too. The Garmin's hub mount is a little nicer, but both are adequately secure. Both are waterproof. Size is similar. And pairing works exactly the same. In my case, I even have both the Garmin sensors and these aftermarket sensors paired to the same Edge cycling computer. When I use one bike, the GPS detects one set. When I use the other bike, the GPS detects the other set. They work the same. The biggest difference is I paid $80 for the Garmin sensors as a set, and less than $40 for these aftermarket sensors as a set.I really think the ability to switch between speed and cadence mode by reinstalling the battery is a nifty piece of engineering. I'll never switch them after initial setup. But it does mean you can buy one, or two, and then decide how you want to use them.One thing I see people ask sometimes: If a GPS detects speed, why would someone buy a speed sensor? There are three reasons. First, if you're using an indoor trainer, you can mount the speed sensor on the rear hub and still get speed data despite the fact you're pedaling away on a trainer in the basement. Second, if you're mountain biking in terrain with steep mountains and tree cover, or if you're riding downtown in urban settings with tall buildings blocking GPS signal, you'll experience fewer drop-outs in speed data. Third, is accuracy. Even if you're a suburban road cyclist like I am, the speed sensor improves the accuracy of speed reporting of the GPS, and also decreases the latency between speed changes and reporting on the device of the speed change. And that's why I have the speed sensor; just to improve the accuracy and latency of speed reporting.Conclusion: At half the price of a set of Garmin sensors, and providing the same sensor information to the GPS, with the same mounting for cadence, and nearly the same mounting for speed, and with similar battery life, similar waterproofness, and identical device pairing with Garmin Edge GPSs, to me it's easy to conclude that buying these at half the price is the best choice. I have both a set of Garmin sensors, and a set of these -- one set on each of my two bikes -- and if I had it to do over, I'd save the $40 and go with two sets of these instead. It could be that these will wear out sooner, though I rather doubt it; there's not a lot that can go wrong with them.There are two reasons I gave four stars instead of five: First, I like the hub-hugging design of the rubberized shroud that comes with the Garmin Speed Sensor 2 better than I like this aftermarket sensor's flat rubberized backing strip. In use, it makes no practical difference, though. But the Garmin design is slightly nicer in that one regard. I don't really feel that piece of rubber justifies a $40 price difference for the set of sensors, though.The other reason for four stars is this: The product listing claims IP67 weatherproofness: dust proof and submersible to 1 meter for 30 minutes. But the packaging and instructions list the weatherproofness as IP66: dust proof, and heavy seas splash resistant. Meanwhile, the Garmin devices are listed as IPx7: no specific dustproof rating, but submersible to 1 meter for 30 minutes. If this device is IP67, it's rated better than the Garmin at IPx7. But if it's IP66 as the packaging and instructions state, it is less weatherproof than the Garmin, but potentially more dustproof. This ambiguity (the uncertainty because the product listing's specifications differ from the specifications on the packaging and instructions) warrant a 1-star deduction.I've seen reviews that suggest the rubber bands that strap these devices into place aren't durable. I haven't had them long enough to have encountered a failure. If I do encounter a failure in the first year, I'll deduct another star. But for now, 4-stars stands.

I purchased the 2-pack and used one for speed and one for cadence. They both worked fine for about 12 months until the cadence sensor quit. It just died. A new battery did not help. I expect simple electronic devices like this to last more than 12 months. I also found it particularly inconvenient to have to remove the battery to switch from speed to cadence. There is no indicator light (even though the instructions mention it) so it is more of a hit or miss kind of thing until you get it right.

The connectivity is wonderful! Only a few rotations is needed for it to turn back on which is great since I don’t want to fiddle around with this before exercising. I had bought another brand that was more expensive thinking it would be better, but surprisingly enough, THIS item worked a lot better. I returned the other brand and kept this brand. Highly recommend if you’re in need of a speed or cadence sensor!

Excellent accesory, work perfectly. Great quality.

Unfortunately I have not been able to install in on my bike due to is has very little space between the Crank and the Chain stay. If Installed at the front of the crank, the shoe will crash with the sensor. Also almost no space.Only way would be to have a thinner cadence sensor. I have another bike with a skeleton and it works fine.