Overview

The Garmin 010-12844-00 is a bike cadence sensor that mounts on your crank arm and broadcasts pedal cadence in real time to compatible devices over ANT+ and Bluetooth Low Energy. It uses a user-replaceable CR2032 (3 V) battery with an expected life of about 12 months at 1 hour per day, and it carries an IPX7 water rating for incidental immersion up to 1 m for up to 30 minutes.

On boats that carry bikes for dock runs or keep an indoor trainer aboard, this is a simple way to capture cadence without magnets or alignment hassles. It is built to operate from -20 to 60 C, so it holds up well from cool storage lockers to warm cabins and sun-baked decks.

Key features

• Measures cadence at the crank arm and reports pedal strokes per minute without magnets or external pickup parts to line up.
• ANT+ and Bluetooth Low Energy broadcasting for pairing with compatible cycling computers, watches, training apps, and fitness equipment.
• Supports pairing with up to two Bluetooth devices and any number of ANT+ devices.
• IPX7 water rating for washdowns, rain, and incidental immersion up to 1 m for up to 30 minutes.
• User-replaceable CR2032 (3 V) battery with approximately 12 months of life at 1 hour per day.
• Status LED indicates activity after two revolutions and signals low battery with a red flash.

Installation and setup

Mount the sensor on the inside of the non-drive-side crank arm and secure it with the smallest band size that stretches across the crank and holds firmly. After installation, rotate the crank to confirm the sensor and bands clear the frame and your shoe, then take a short test ride and re-check for rubbing or any sign of damage.

Compatibility and data pairing

Pairing is done through a compatible head unit, watch, trainer, or app that supports ANT+ or Bluetooth Low Energy sensors. Keep the display device within about 3 m (10 ft.) during pairing, stay roughly 10 m (33 ft.) away from other wireless sensors, and wake the sensor by rotating the crank two revolutions so the LED flashes. Once paired, the sensor reconnects automatically when it is active and in range.

The cadence sensor is meant to be read by a compatible display or training platform rather than used on its own with a phone app as a standalone sensor.

Use cases on board

This sensor is a good match for boaters who keep a folding bike aboard for marina errands, commute to the dock, or train on an onboard stationary setup and want cadence data alongside speed, heart rate, or power. It also works well when a single sensor needs to move between multiple bikes used by crew or family.

Maintenance and care

If the sensor sees sweat, spray, or salt air, rinse it with fresh water and dry it before stowing gear below deck. When replacing the battery, keep the sealing gasket in good condition and seated correctly before closing the cover to maintain the water rating.