Sensor: Geomagnetic sensor. Wireless interface: Bluetooth/ant+. Product: Speed sensor. 1pcs speed sensor (with a battery). In speed mode, you need to set the wheel size to use the app. Install the battery to switch the mode speed model to the rhythm model.
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LIXADA Waterproof Bike Computer with LED Backlight Bicycle Speedometer Odometer Calorie Counter and Temperature Display for Bike
Aliexpress UK
【Cadence Sensor Mode】：Reinstall the battery until the blue light flashes to indicate the cadence mode.Rotate the crank and search for the sensor using ANT+ or Bluetooth device. Speed & Cadence Dual Sensor.
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Sram PC 1110 Chain 11 Speed PC1110 For MTB Road Bike Bicycle Chain 11s 112 Link With Quickly Link One PCS Original Bike Chain
Aliexpress UK
Reinstall battery can Switching Mode speed model to cadence model or cadence model to speed model. Speed + cadence bi-mode sensor. Works with standard Bluetooth speed or cadence protocol Bluetooth bicycle computer or watch.
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Wireless bicycle stem computer road mtb mountain handlebar bike stem waterproof cycling accessories smart bike stopwatch parts
Aliexpress UK
Cadence or Speed Sensor : Switch the battery, it will switch between rpm cadence and speed mode. Cadence sensor attaches on crank, blue LED will light up for three seconds on the panel. Speed sensor mounts on the axle with red LED light up for three seconds on panel.
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20cm Bicycle Handlebar Extended Bracket Bike Mount Bar Computer Holder Support Rack Alloy Stand Double Frame Bicycle Clip
Aliexpress UK
I don’t have the original box anymore, but the instructions are easy to find online if needed.
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20cm Bicycle Handlebar Extended Bracket Bike Mount Bar Computer Holder Support Rack Alloy Stand Double Frame Bicycle Clip
Aliexpress UK
The Garmin Edge 520 Plus GPS cycle computer is a high-quality device designed for cyclists. Made of durable plastic in a sleek black colour, it features waterproof properties and ANT+ connectivity for seamless data transfer. With GPS capability and measurement for cadence, this bike computer provides accurate tracking and monitoring of cycling metrics. The English language interface and imperial measurement system make it easy to use for cyclists of all levels. Perfect for those who want to enhance their cycling experience with advanced technology from a trusted brand like Garmin.
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10/20/30cm Bicycle Handlebar Extended Bracket Aluminum Alloy Waterproof Bicycle Bar Computer Holder Bicycle Accessories
Aliexpress UK
Cycplus C3 cadence and speed sensor. Get a Cycplus C3 sensor! It also supports Bluetooth 5.0 and the ANT+ protocol. One CR2032 battery (included) is enough to power the sensor.
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Magene C406 Bike Computer GPS Wireless Smart Mountain Road Bicycle Monito Stopwatchring Cycling Data Map bicycle S3+ H64
Aliexpress UK
Reinstall battery can Switching Mode speed model to cadence model or cadence model to speed model. Speed + cadence bi-mode sensor. Works with standard Bluetooth speed or cadence protocol Bluetooth bicycle computer or watch.
eBay
ROCKBROS Bicycle Computer GPS Cycling pedal speed sensor ANT+ Bluetooth wireless For road bike mountain bike riding accessories
Aliexpress UK