Dual ANT+ and Bluetooth is what keeps a sensor usable across head units · review
A magnet-free cadence sensor from an established German maker, with a pivoting mount and both ANT+ and BLE, though the manufacturer publishes little detail.
Our conclusion Buy it for the brand fit with a SIGMA computer. On specification alone the dual-mode sensors here do more for less.
SIGMA’s DUO is the specialist-brand option in this hub, with a specification sheet that is remarkably brief.
A pivoting function. High quality. Compatibility. Durability. ANT+ and BLE. Magnet-free cadence measurement.
That is genuinely the extent of it, and it is worth stating plainly rather than dressing up. Where a manufacturer publishes four adjectives and two protocols, this site reports four adjectives and two protocols.
Magnet-free cadence measurement is the modern approach and the right one — nothing to align on a spoke, nothing to drift out of position. ANT+ and BLE together mean it pairs with head units and phones alike. The pivoting mount addresses a real fitting problem on frames where the chainstay sits close to the crank.
Unlike the dual-mode sensors in this hub, this measures cadence and nothing else. If you want speed as well, that is a second purchase, and the dual-mode sensors cost less individually.
Catalogued and unsold: the American Amazon shop lists the reference with nobody behind it.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
A listing is not an offer: the reference exists on these stores, availability changes daily.
| Measurement | Cadence, magnet-free |
|---|---|
| Protocols | ANT+ and BLE |
| Mount | Pivoting |
| Amazon reference | B09KNYFBW2 (identical on 4 markets) |
| EAN | 4016224203369 |
No. SIGMA specifies this as a cadence sensor. The dual-mode sensors elsewhere in this hub switch between speed and cadence; this one does cadence only.
It lets the sensor body angle relative to its mount, which matters on crank arms and frames where a fixed pod would foul the chainstay.
7.8/ 10
Buy it for the brand fit with a SIGMA computer. On specification alone the dual-mode sensors here do more for less.
Riders already using SIGMA computers who want a matching sensor from the same maker.
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Speed/cadence · Bluetooth and ANT+ · IP67 · app compatible
A dual-protocol speed and cadence sensor with a published IP67 rating and stated compatibility with Zwift, Rouvy, Ride with GPS, Peloton and Wahoo apps.
Best for: Indoor training, where named app compatibility and a sealed housing both earn their place.
Speed/cadence · Bluetooth and ANT+ · elastic band mount
A dual-protocol speed and cadence sensor at the same entry price as the Magene, mounting with an elastic double-sided band and no tools.
Best for: A second sensor to pair with the first, or a spare for a second bike.
Both sensors · ANT+ and Bluetooth 5.0 · on-board storage · hub mount
A bundle of both sensors, storing distance on board so rides record without a head unit present, over ANT+ and Bluetooth 5.0.
Best for: Garmin users who want both measurements, and anyone who wants rides logged without carrying a computer.
≈ $125
