Introduction
Thank you for choosing the CYCLAMI WT28 Smart Cycling Tail Light. This intelligent tail light is designed to enhance your cycling safety and personalize your ride with customizable emoji patterns. Featuring a high-resolution LED matrix, intelligent brake sensing, and APP control, the WT28 provides a safer and more engaging cycling experience. Please read this manual thoroughly before use to ensure proper operation and maintenance.

Image: CYCLAMI WT28 Smart Emoji Tail Light showcasing its customizable patterns.
Key Features
- 244 Pixel Dot Matrix Display: Offers rich dynamic and static pattern display for detailed visual effects.
- APP Customization: Edit and create personalized display patterns, supporting both single and motion graphics with up to 50 frames.
- Intelligent Brake Sensor: High-precision sensors enable automatic brake light activation, intelligent sleep, and wake-up functions for enhanced safety and efficiency.
- IP66 Waterproof Rating: Designed to withstand various weather conditions, ensuring stable operation in wind and rain.
- Quick Release Bracket: Easy to install and remove, suitable for both seatposts and seat cushions.
- Group Function: Allows a "captain" to control the tail light patterns of multiple team members within a 30-meter range, enabling synchronized displays.
- Energy Efficient Design: Equipped with a 400mAh battery providing 5.5 to 68 hours of battery life, rechargeable via a Type-C port.

Image: Overview of the CYCLAMI WT28's main features.
Package Contents
Upon opening the package, please ensure all the following items are present and in good condition:
- CYCLAMI WT28 Smart Cycling Tail Light
- Quick Release Mounting Bracket (for seatpost/seat cushion)
- USB Type-C Charging Cable
- User Manual (this document)
- Tie wraps (for seat cushion support, if applicable)
Setup and Installation
The CYCLAMI WT28 offers versatile mounting options for both seatposts and seat cushions using its quick-release bracket.
Mounting Options:
- Seat Cushion Support:
- Securely tie the ends of the cushion support under the bicycle seat cushion with the provided tie wraps.
- Put the tail light into the cushion holder and rotate it 90 degrees until it clicks into place.
- Ensure the light is firmly attached and facing backward.
- Seatpost Bracket:
- Secure the seatpost bracket to the seatpost with the strap, ensuring a snug fit.
- Place the tail light into the seat tube holder and rotate it 90 degrees until it clicks into place.
- Verify the light is stable and correctly oriented.

Image: Detailed installation guide for seat cushion and seatpost mounting.
Note: Always ensure the tail light is securely mounted before riding to prevent it from falling off during use.
Operation
Power On/Off
The WT28 features intelligent sensing for automatic power management. It will typically wake up when motion is detected and enter sleep mode after a period of inactivity.
- Power On: The device will automatically power on when motion is detected.
- Power Off: The device will automatically enter sleep mode after a period of no motion.
Intelligent Brake Sensor
The high-precision brake sensor automatically detects deceleration and illuminates the tail light brighter to signal braking to following traffic. This feature operates automatically once the light is active.

Image: Intelligent Brake Sensor in action.
APP Control and Customization
The CYCLAMI WT28 can be fully customized using its dedicated mobile application.
- Download the APP: Search for the "CYCLAMI" app on your smartphone's app store (iOS/Android).
- Connect to the Light:
- Ensure your tail light is powered on and your phone's Bluetooth is enabled.
- Open the CYCLAMI app and follow the on-screen instructions to pair with your WT28 tail light.
- Customize Patterns:
- Within the app, you can select from a variety of pre-set static and dynamic emoji patterns.
- Use the "DIY" function to create your own custom patterns. The app supports up to 50 frames for motion graphics.
- Once a pattern is created or selected, send it to the tail light with one click to display personalized content.

Image: APP interface for editing and customizing display patterns.
Group Function
For group rides, one WT28 tail light can act as a "captain" to synchronize patterns across multiple WT28 lights within a 30-meter range.
- Refer to the CYCLAMI app for specific instructions on enabling and managing the group function.
- This feature allows for a uniform display pattern across a cycling team, enhancing visibility and team cohesion.

Image: Group function in use, showing synchronized tail lights.
Maintenance
Charging
- When the battery is low, connect the provided USB Type-C cable to the charging port on the tail light and to a standard USB power source (e.g., computer, wall adapter).
- A full charge typically takes approximately 3 hours.
- The battery indicator in the app or on the device (if available) will show charging status.

Image: Energy efficient design and charging details.
Cleaning
- Wipe the tail light with a soft, damp cloth to remove dirt and debris.
- Do not use harsh chemicals or abrasive cleaners, as these may damage the casing or LED display.
- Ensure the charging port cover (if present) is securely closed after charging to maintain its IP66 waterproof rating.
Storage
- Store the tail light in a cool, dry place when not in use.
- For long-term storage, it is recommended to charge the battery to about 50% every few months to prolong its lifespan.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on. | Battery is depleted. Device is in sleep mode. | Charge the tail light. Move the device to wake it up. |
| Cannot connect to APP via Bluetooth. | Bluetooth is off on phone. Light is not powered on. App requires update. | Ensure Bluetooth is enabled. Move the light to wake it up. Update the CYCLAMI app to the latest version. |
| Custom patterns not displaying. | Pattern not successfully sent to light. Connectivity issue. | Ensure the pattern is successfully uploaded from the app. Re-establish Bluetooth connection. |
| Brake sensor not working. | Light is not active. Sensor obstruction. | Ensure the light is powered on and active. Check for any physical obstructions around the sensor area. |
| Water ingress/Malfunction after rain. | Charging port cover not sealed. Damage to casing. | Ensure the Type-C charging port cover is always securely closed. If damage is visible, contact support. |
Specifications
| Feature | Detail |
|---|---|
| Brand | CYCLAMI |
| Model Number | WT28 |
| Type | Tail Light |
| Body Material | ABS+PC |
| Power Supply | Battery (400mAh) |
| Mounting Placement | Seatpost, Seat Cushion |
| Waterproof Level | IP66 |
| Intelligent Sensing | Yes (Brake Sensor, Sleep/Wake-up) |
| Support Dimmer | Single File |
| Certification | CE, FCC, RoHS |
| Pixel Points | 244 |
| APP Control | Yes (Custom patterns, motion graphics up to 50 frames) |
| Group Function | Yes (Control distance > 30m) |
| Battery Life | 5.5 - 68 hours (depending on mode) |
| Charging Port | Type-C |
| Input Current | 5V/0.28A |
| Charge Time | ~3 hours |
| Weight | ~29g |
| Dimensions | 41 x 41 x 29 mm |
User Tips
- Maximize Battery Life: Utilize the intelligent sleep mode by ensuring the light is stationary when not in use. For longer rides, consider simpler patterns to conserve battery.
- Visibility Check: Before each ride, quickly check that your chosen pattern is clearly visible and the light is securely mounted.
- APP Exploration: Spend some time exploring the CYCLAMI app's customization options. Creating unique patterns can significantly enhance your cycling experience and personal expression.
- Group Ride Coordination: If riding in a group with other WT28 users, designate a "captain" to utilize the group function for synchronized light displays, improving group visibility and aesthetics.
- Regular Charging: Get into the habit of charging your tail light after every few rides, especially before long journeys, to ensure it's always ready.
Warranty and Support
The CYCLAMI WT28 Smart Cycling Tail Light is designed for durability and performance. For any issues or inquiries, please refer to the following:
- Warranty Information: Please retain your proof of purchase for warranty claims. Specific warranty terms and duration may vary by region and retailer.
- Customer Support: For technical assistance, troubleshooting beyond this manual, or warranty service, please contact the retailer where you purchased the product or visit the official CYCLAMI website for support contact details.
- Product Updates: Check the CYCLAMI app regularly for firmware updates that may introduce new features or improve performance.





