1. Introduction
The CATEYE Velo Wireless Bike Computer (Model CC-VT230W) is a simplified wireless cycling computer designed to track essential ride data. This device provides current, maximum, and average speed, total distance, trip distance, elapsed time, calorie consumption, pace arrow, and clock functions. It features a programmable odometer and a user-friendly menu screen, making it suitable for various bicycle types, including 27.5 and 29-inch wheels. The Velo Wireless is waterproof and includes an auto start/stop function for convenience.
2. Setup
2.1. Included Components
Before installation, ensure all components are present:
- CATEYE Velo Wireless Computer Unit
- Analog Wireless Speed Sensor
- Zip-Tie Mounting Bracket
- Sensor Rubber Mount
- Universal Wheel Magnet
- 2x CR2032 Batteries (one for computer, one for sensor)
- 4x Zip-Ties

Figure 1: All included components for the CATEYE Velo Wireless Bike Computer.
2.2. Installation
Follow these steps to install your Velo Wireless computer:
- Install the Sensor: Attach the analog wireless speed sensor to the front fork using the sensor rubber mount and zip-ties. Ensure it is positioned on the side of the fork that aligns with the wheel magnet.
- Attach the Wheel Magnet: Secure the universal wheel magnet to a spoke on the front wheel. Position the magnet so it passes within 5mm of the speed sensor when the wheel rotates.
- Mount the Computer: Attach the zip-tie mounting bracket to your handlebar or stem using the provided zip-ties. Ensure it is securely fastened and positioned for easy viewing.
- Insert the Computer Unit: Slide the Velo Wireless computer unit onto the mounting bracket until it clicks into place.

Figure 2: Proper placement of the wireless speed sensor and wheel magnet.

Figure 3: Velo Wireless computer mounted on a handlebar.
2.3. Initial Settings
After installation, configure the computer for accurate readings:
- Wheel Circumference: Set the correct wheel circumference based on your tire size. The manual provides presets for common sizes like 20", 26", 27", 27.5", 29", and 700c. Accurate setting ensures precise speed and distance measurements.
- Programmable Odometer: You can manually set the odometer to carry over mileage from a previous computer or to a desired starting value. This prevents losing your total distance data when changing batteries.
- Clock: Set the current time.

Figure 4: Key features including programmable odometer and large display.
3. Operation
3.1. Display Modes
The Velo Wireless displays various ride data. Use the mode button (typically located at the bottom of the unit) to cycle through the following functions:
- Current Speed (SPD): Your real-time speed.
- Maximum Speed (MX): The highest speed achieved during the current trip.
- Average Speed (AV): Your average speed for the current trip.
- Trip Distance (DST): The distance covered in the current trip.
- Total Distance (ODO): The cumulative distance recorded by the computer.
- Elapsed Time (TM): The total time spent moving during the current trip.
- Calorie Consumption (CAL): An estimate of calories burned during the ride.
- Pace Arrow: Indicates if your current speed is above or below your average speed.
- Clock: Displays the current time.

Figure 5: Overview of the 8 unique data modes.
3.2. Auto Start/Stop
The Velo Wireless features an automatic start/stop function. The computer will automatically begin recording data when you start riding and pause when you stop, ensuring that only active riding time and distance are counted. This feature helps maintain accurate average speed calculations.
3.3. Video Demonstration
Watch this official video from CATEYE America for a visual guide on the Velo Wireless Bike Computer.
Video 1: An official overview of the CATEYE Velo Wireless Bike Computer, demonstrating its features and functionality.
4. Maintenance
4.1. Battery Replacement
The Velo Wireless computer and sensor each use a CR2032 battery. The computer battery typically lasts approximately 1 year, while the sensor battery lasts approximately 10,000 km (6,250 miles). When the display becomes dim or erratic, it's time to replace the batteries. Refer to the specific instructions in the full manual for battery compartment access.

Figure 6: CR2032 battery and computer battery compartment.
4.2. Water Resistance
The Velo Wireless is rated IPX8 for water resistance, meaning it is protected against continuous immersion in water under specified conditions. This allows for use in various weather conditions, including rain. However, avoid prolonged submersion or high-pressure water jets, which could compromise the seals.

Figure 7: Velo Wireless computer demonstrating IPX8 water resistance.
4.3. Cleaning
Clean the computer unit and sensor with a soft, damp cloth. Do not use abrasive cleaners or solvents, as these can damage the display or casing.
5. Troubleshooting
If you encounter issues with your CATEYE Velo Wireless, consider the following common solutions:
- No Speed Display:
- Check the distance between the sensor and the wheel magnet. It should be less than 5mm.
- Ensure the sensor and magnet are correctly aligned.
- Verify that the sensor battery is not depleted.
- Erratic Readings:
- Confirm the wheel circumference setting is accurate.
- Check for potential interference from other electronic devices (e.g., lights, phone) or strong magnetic fields.
- Display Not Working:
- Replace the computer unit battery.
- Ensure the computer unit is securely seated in its mount.
- Difficulty Reading Display at Night: The Velo Wireless does not feature a backlight. For night riding, external illumination may be required to view the display.
For more detailed troubleshooting, please refer to the complete product manual or contact CATEYE customer support.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | CATEYE |
| Model Number | CC-VT230W |
| Color | Black |
| Product Dimensions | 2"L x 2"W x 2"H |
| Item Weight | 3.2 ounces |
| Screen Size | 10 Centimeters |
| Display Type | LCD |
| Sensor Type | Speed Sensor |
| Connectivity Technology | Proprietary Wireless |
| Mounting Type | Handlebar Mount |
| Human Interface Input | Buttons |
| International Protection Rating | IP65 (Note: Product description states IPX8, but specifications list IP65. Refer to product packaging for definitive rating.) |
| Included Components | Magnet, Mount, Speed sensor |
| UPC | 725012028582 |
7. Warranty & Support
7.1. Warranty Information
The CATEYE Velo Wireless Bike Computer comes with a 2-year warranty. Please retain your proof of purchase for any warranty claims. The warranty covers manufacturing defects under normal use conditions.
7.2. Customer Support
For further assistance, technical support, or warranty inquiries, please visit the official CATEYE website or contact their customer service department. Contact details can typically be found on the product packaging or the official CATEYE website.