USER MANUAL

Standard Accessories

• Main Device x 1 (CR2032 battery installed)
• Crank Magnet x 1
• Spoke Magnet x 1
• Rubber Band for Main Device x 1
• Rubber Pad for Main Device x 1
• Battery Cover Tool x 1
• Cable Ties x 6
• Screw Wrench x 1
• User Manual x 1

Accessories Installation Diagram

This diagram illustrates the installation of the sensors on a bicycle:

• Crank Magnet: Positioned on the crank to detect the cycling cadence.
• Spoke Magnet: Positioned on a bicycle spoke to detect the cycling speed.
• Main Device: Mounted on the bicycle frame, it detects both cycling cadence and speed, and transfers real-time data to a smartphone or sports watch or bike computer via Bluetooth and ANT+.

Remove the Insulating Sheet

1. Rotate the battery cover to the OPEN position using the battery cover tool, and then take off the battery cover.
2. Remove the battery insulating sheet and install the battery cover back. Ensure the battery cover is in the OPEN position before rotating it back to close.

Testing Mode & LED Light

The BK805 features a testing mode to verify correct installation of magnets and sensors. It is recommended to run this mode each time you install the BK805.

To enter testing mode, reinstall the battery (refer to Battery Replacement section for details). The testing mode will remain active for 15 minutes after battery installation.

During testing:

• If the speed sensor (Spoke magnet) is installed correctly and the wheel is rotated, the LED light will flash blue.
• If the cadence sensor (Crank magnet) is installed correctly and the crank is turned, the LED light will flash green.

The sensing positions are indicated on the main device:

• The crank magnet (cadence sensor) is positioned to align with the crank.
• The spoke magnet (speed sensor) is positioned to align with the bicycle spoke.
• The LED Light is visible on the main device.

Accessories Installation

1. Install the crank magnet on the crank and fix it with two cable ties. Before determining the final position, do not fully tighten the ties. The procedure for other components is similar.
2. Install the rubber pad onto the main sensor.
3. Align the sensing position of the cadence sensor with the crank magnet. Install it as depicted and secure it with cable ties.
4. Attach the spoke magnet to the bicycle spoke, aligning it with the sensing position of the speed sensor, and tighten it. This can be done on either a circular or flat spoke.
5. Verify that the crank magnet and spoke magnet are aligned with the sensor's sensing position. The distance between the magnet and sensor should be less than 12mm. Secure the tail of the sensor using the screw wrench. (Notice: When rotating the tail, do not force it beyond its rotation range to prevent damage to the device.)
6. Confirm the installation is successful by turning the crank and the back wheel of the bicycle. The speed LED should illuminate blue, and the cadence LED should illuminate green. Once confirmed, tighten the cable ties, trim any excess material, and secure all accessories using the rubber band.

Battery Replacement

If the device is not detected, consider replacing the battery.

1. Rotate the battery cover to the OPEN direction to remove it.
2. Remove the used battery and dispose of it properly according to local regulations.
3. Install the new battery, ensuring correct polarity (+ and -). Use the battery cover tool to rotate the battery cover back to the closed position.

⚠️ To avoid danger, batteries should be kept away from children.

Specifications

Applicable Smart Phones

• iOS 9.0 or above, iPhone 4s model or above
• Android 4.3 or above with Bluetooth 5.0

Compatible Apps

CoospoRide, Wahoo Fitness, Zwift, Openrider, or other Apps with speed and cadence display. (Notice: Please refer to your latest test.)

FAQ

• If cadence or speed data is missing, please check the position of the magnet and sensor installed, and adjust them until the data is normal.
• The Bluetooth 5.0 and ANT+ protocol of the bicycle speed / cadence sensor can work simultaneously. If you intend to connect the smartphone and sports watches separately, ensure that the devices you are connecting support Bluetooth 5.0 and ANT+.
• The device is compatible with a variety of popular fitness Apps. For connection instructions, please refer to the instructions provided with the specific App.

Disclaimer

The information contained in this manual is for reference purposes only. The product described herein may be subject to alterations based on the manufacturer's ongoing research and development plans, without prior notification.

COOSPO shall not be held legally responsible for any direct or indirect, incidental, or special damages, losses, or expenses arising from or in connection with the use of this manual and the product described within.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

Product Disposal and Safety

• ♻️ Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Contact your local government or a retailer for additional information.
• ⚠️ Do not open or modify the product.
• ⚠️ Do not disassemble or attempt to service this product.
• This product is safe under normal and reasonably foreseeable operating conditions.
• If the product is operating improperly, call COOSPO support.
• Product must be returned to the manufacturer for any service or repair.

Battery Statement

⚠️ WARNING

• ⚠️ INGESTION HAZARD: This product contains a button cell or coin battery.
• ⚠️ DEATH or serious injury can occur if ingested.
• A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours.
• ⚠️ KEEP new and used batteries OUT OF REACH of CHILDREN.
• ⚠️ Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.

• Remove and immediately recycle or dispose of used batteries according to local regulations and keep away from children. Do NOT dispose of batteries in household trash or incinerate.
• Even used batteries may cause severe injury or death.
• Call a local poison control center for treatment information.
• Compatible battery type: CR2032
• Nominal battery voltage: 3V
• Do not force discharge, recharge, disassemble, heat above 45°C, or incinerate. Doing so may result in injury due to venting, leakage, or explosion resulting in chemical burns.
• Ensure the batteries are installed correctly according to polarity (+ and -).
• Do not mix old and new batteries, or different brands or types of batteries, such as alkaline, carbon-zinc, or rechargeable batteries.
• Remove and immediately recycle or dispose of batteries from equipment not used for an extended period of time according to local regulations.
• Always completely secure the battery compartment. If the battery compartment does not close securely, stop using the product, remove the batteries, and keep them away from children.