{"product_id":"bryton-smart-cadence-sensor-magnetless-ant-bluetooth-270-hour-battery","title":"Bryton Smart Cadence Sensor – Magnetless, ANT+ \u0026 Bluetooth, 270-Hour Battery","description":"\u003cp\u003eThe \u003cstrong\u003eBryton Smart Cadence Sensor\u003c\/strong\u003e is a compact, magnetless cadence sensor that attaches to the crank arm and transmits pedalling RPM wirelessly via \u003cstrong\u003eANT+ and Bluetooth 4.0\u003c\/strong\u003e to compatible bike computers, smartwatches, and smartphones. Cadence data is one of the most useful metrics for improving cycling efficiency — training to a consistent target cadence reduces muscular fatigue, improves power output, and helps you ride stronger for longer. The Bryton cadence sensor makes this data available on any ANT+ or Bluetooth-enabled device without the complexity of magnet-based sensors.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003emagnetless design\u003c\/strong\u003e means there are no magnets to align or position precisely — the sensor detects crank rotation directly, making installation straightforward on any crank arm size. Additional holes for cable ties ensure a secure, rattle-free fit. The \u003cstrong\u003eCR2032 battery\u003c\/strong\u003e provides up to \u003cstrong\u003e270 hours of active use\u003c\/strong\u003e and 300 days of standby — a widely available, inexpensive cell that takes seconds to replace. The sensor is waterproof to \u003cstrong\u003eIPX7\u003c\/strong\u003e (1 metre for 30 minutes), making it suitable for all-weather riding. It's the same cadence sensor included in the Bryton Sensor Bundle variants of the \u003ca href=\"\/products\/bryton-rider-550-gps-unit\"\u003eRider 550\u003c\/a\u003e, \u003ca href=\"\/products\/bryton-rider-650-gps-unit\"\u003eRider 650\u003c\/a\u003e, \u003ca href=\"\/products\/bryton-rider-s510-gps-unit\"\u003eRider S510\u003c\/a\u003e, and \u003ca href=\"\/products\/bryton-rider-s810-gps-unit\"\u003eRider S810\u003c\/a\u003e, available here as a standalone sensor for riders who purchased the Device Only variant or want a replacement.\u003c\/p\u003e\n\n\u003cp\u003eBrowse the full \u003ca href=\"\/collections\/bryton\"\u003eBryton range\u003c\/a\u003e or our \u003ca href=\"\/collections\/computers-gps\"\u003ecomputers and GPS collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It's Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMagnetless cadence measurement — no magnet alignment required, fits all crank arm sizes\u003c\/li\u003e\n\u003cli\u003eANT+ and Bluetooth 4.0 — compatible with most bike computers, smartwatches, and smartphones\u003c\/li\u003e\n\u003cli\u003e270 hours active battery life on a standard CR2032 cell — 300 days standby\u003c\/li\u003e\n\u003cli\u003eIPX7 waterproof — suitable for all-weather riding\u003c\/li\u003e\n\u003cli\u003eCable tie mounting — secure, rattle-free fit on any crank arm\u003c\/li\u003e\n\u003cli\u003eStandalone purchase for Bryton Device Only buyers or as a replacement sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It's NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSpeed measurement — this is a cadence sensor only; a separate speed sensor is required for speed data without GPS\u003c\/li\u003e\n\u003cli\u003eDevices without ANT+ or Bluetooth support\u003c\/li\u003e\n\u003cli\u003eSustained water immersion beyond IPX7 rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it compatible with non-Bryton devices?\u003c\/strong\u003e\u003cbr\u003eYes — the sensor transmits via standard ANT+ and Bluetooth 4.0 protocols, making it compatible with the vast majority of bike computers, smartwatches, and cycling apps that support cadence sensors, including Garmin, Wahoo, and others. It is not limited to Bryton devices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does a magnetless cadence sensor work?\u003c\/strong\u003e\u003cbr\u003eTraditional cadence sensors use a magnet on the crank arm and a sensor on the chainstay that detects each magnet pass. Magnetless sensors use an accelerometer inside the sensor unit to detect the rotation of the crank arm directly, without needing a separate magnet. This makes installation simpler — just attach the sensor to the crank arm with the included cable ties and pair to your device.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is cadence important for cycling?\u003c\/strong\u003e\u003cbr\u003eCadence (pedalling RPM) is a key metric for cycling efficiency. Most coaches recommend a cadence of 80–90 RPM for road cycling, as higher cadences shift the workload from muscles to the cardiovascular system, reducing muscular fatigue on long rides. Monitoring cadence helps you develop a more efficient pedalling style and avoid grinding low gears, which accelerates fatigue and increases injury risk.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this the same sensor included in the Bryton Sensor Bundles?\u003c\/strong\u003e\u003cbr\u003eYes — this is the same Smart Cadence Sensor included in the Sensor Bundle variants of the \u003ca href=\"\/products\/bryton-rider-550-gps-unit\"\u003eRider 550\u003c\/a\u003e, \u003ca href=\"\/products\/bryton-rider-650-gps-unit\"\u003eRider 650\u003c\/a\u003e, \u003ca href=\"\/products\/bryton-rider-s510-gps-unit\"\u003eRider S510\u003c\/a\u003e, and \u003ca href=\"\/products\/bryton-rider-s810-gps-unit\"\u003eRider S810\u003c\/a\u003e. If you purchased the Device Only variant and want to add cadence tracking, this is the sensor to buy.\u003c\/p\u003e","brand":"Bryton","offers":[{"title":"Black","offer_id":46564292919471,"sku":"BR561104000068","price":19.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/51439-pm.jpg?v=1770988227","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/bryton-smart-cadence-sensor-magnetless-ant-bluetooth-270-hour-battery","provider":"Swinnerton Cycles","version":"1.0","type":"link"}