Sunny Health & Fitness Cycling Cadence & Speed Sensor — Bluetooth, Magnet-less for Indoor/Outdoor, Long Battery

The Sunny Health & Fitness Cycling Cadence + Speed Sensor is a compact Bluetooth sensor that tracks cadence and speed for both indoor trainers and outdoor bikes, streaming real-time metrics to the SunnyFit app.

Designed to convert a regular bike or stationary trainer into a smart, data-driven machine, this magnet-less sensor pairs wirelessly with the SunnyFit app to show RPM, speed, distance, time, and estimated calories. Its lightweight, water-resistant housing and long battery life make it suitable for frequent training sessions, while a simple button swap switches modes between cadence and speed.

How does the sensor connect and send workout data?

Connection is via Bluetooth to the SunnyFit app on your phone or tablet, delivering real-time metrics during every ride. Two LEDs indicate mode and pairing status so you always know it’s communicating properly.

• Bluetooth low-energy pairing to SunnyFit app and compatible devices.
• Blue LED for cadence mode; red LED for speed mode.
• Live metrics: RPM, speed, distance, time, and calorie estimates.
• App stores workouts to review progress over time and join leaderboards.

What makes the magnet-less design useful for everyday cyclists?

By removing magnets, the sensor becomes smaller, lighter, and easier to fit on varied cranks without alignment hassles. That streamlined design also tends to extend battery life and reduces maintenance during regular use.

• No magnet positioning — attach and go for faster setup.
• Compact profile fits many crank sizes and trainer frames.
• Improved durability and fewer moving parts to adjust.
• Reduced interference for consistent cadence/speed readings.

How simple is installation and switching between indoor and outdoor use?

Installation is a one-person task: place the sensor on the rubber mat, wrap with the supplied elastic bands or cable ties, and connect to SunnyFit. Changing from cadence to speed is done with a single button press in-app or on-device, letting you switch environments quickly.

• Wrap sensor around the crank with included elastic bands or cable ties.
• Protective rubber mat prevents slippage and isolates vibrations.
• Swap modes instantly via a tap in the SunnyFit app or the device button.
• Works on indoor trainers and outdoor drivetrains without hardware changes.

How long does the battery last and how tough is the unit?

The sensor delivers up to 500 hours of battery life, reducing the frequency of replacements and interruptions to training. Its water-resistant casing and premium elastic bands are built to withstand sweat, light rain, and repeated installations.

• Rated up to 500 hours per battery for extended use between changes.
• Water-resistant enclosure protects electronics during workouts.
• Durable elastic bands designed to resist snapping and fraying.
• Clear LEDs provide quick visual feedback on mode and connectivity.

Who is this for: Cyclists who want reliable, straightforward performance data without the complexity of magnets or heavy hardware. The Sunny Cadence CB110 is ideal for home gym riders using trainers, commuters who want basic speed tracking on their outdoor rides, and anyone seeking easy Bluetooth integration with the SunnyFit ecosystem for coaching videos, tours, and community features.