1. Introdución
The NineLeaf Bike Turn Signals (Model KS-SF31-02C) is a versatile 5-in-1 device designed to enhance cycling safety. It integrates a warning light, brake light, turn signal, electric bell, and anti-theft vibration alarm. Featuring 31 high-end LED lights, it provides up to 160 lumens of brightness for visibility in various conditions. This manual provides instructions for proper installation, operation, and maintenance of your device.
2. Contido do paquete
Verifique que todos os elementos estean presentes no seu paquete:
- Bike Taillight Unit
- Wireless Remote Control (Oval)
- Soporte de montaxe do tija do asento
- Handlebar Mounting Bracket for Remote
- Cable de carga USB-C
- Installation Hardware (screws, silicone rings)
- Manual de usuario (este documento)

Figura 2.1: Contents of the NineLeaf Bike Turn Signals package.
3. Especificacións
| Característica | Especificación |
|---|---|
| Nome do modelo | KS-SF31-02C |
| Brillo | Ata 160 Lumens |
| Modos de luz | 6 (Slow Flashing, Breathing, Fast Blinking, Steady Light, Emergency Light, OFF) |
| Volume de alarma | Ata 110 dB |
| Sensibilidade da alarma | 7 niveis axustables |
| Horn Sounds | 3 tipos |
| Resistencia á auga | IP65 (Taillight), IP44 (Remote Control) |
| Fonte de enerxía | Batería recargable (USB-C) |
| Taillight Mount Compatibility | 0.98 to 1.38 inch seat posts |
| Remote Mount Compatibility | 0.78 to 0.94 inch handlebars |
| Material | Plástico |
| Peso do elemento | 0.26 quilogramos |
4. Instalación
4.1. Taillight Installation
- Place the silicone ring onto the bike seat post at the desired height.
- Insert the taillight's mounting brackets into the silicone grooves. Align the nut and secure it with the provided screws.
- Slide the taillight unit into the bracket slot until it clicks securely into place.
Nota: The taillight is designed to be difficult to remove after installation for anti-theft purposes. It is recommended to remove the bracket or use a power bank/long cable for charging if the taillight cannot be easily detached.

Figura 4.1: Taillight installation steps.
4.2. Instalación de control remoto
Attach the remote control to your bike's handlebar using the provided handlebar mounting bracket. Ensure it is positioned within easy reach for safe operation while riding. The remote control is compatible with handlebars measuring 0.78 to 0.94 inches in diameter.

Figura 4.2: Remote control mounted on a handlebar.
5. Funcionamento
5.1. Charging the Taillight
Before first use, fully charge the taillight. Connect the supplied USB-C cable to the taillight's charging port and to a USB power source (e.g., wall adapter, power bank, computer). The right turn signal lights will flash to indicate the charge level (1-4 flashes for 25% to 100% charge). A full charge typically provides up to 70 hours of work time.

Figura 5.1: Taillight charging via USB-C.
5.2. Funcións de control remoto
The oval-shaped remote control allows easy access to all functions. Refer to the diagram below for button identification:
- 1. Left Turn Light Button: Activates the left turn signal.
- 2. Electric Bell Button: Activates the bike horn.
- 3. Right Turn Light Button: Activates the right turn signal.
- 4. Headlight Button: (Reserved/Waiting for upgrading)
- 5. Botón de modo de luz: Cycles through the 6 light modes.
- 6. Arm Button: Activates the anti-theft alarm.
- 7. Disarm Button: Deactivates the anti-theft alarm.
- 8. Luz indicadora: Shows remote status.

Figura 5.2: Remote control button layout and functions.
5.3. Modos de luz
The taillight offers 6 lighting modes, selectable via the remote control's Light Mode Button (5):
- Parpadeo lento: Red slow flashing light. This is an automatic mode; the light turns off after 30 seconds of inactivity in a dark environment and reactivates upon motion.
- Respiración: Red breathing light. This is an automatic mode; the light turns off after 30 seconds of inactivity in a dark environment and reactivates upon motion.
- Parpadeo rápido: Red fast blinking light. The light remains on until manually turned off.
- Luz constante: Red steady light. The light remains on until manually turned off.
- Luz de emerxencia: Yellow flashing light. The light remains on until manually turned off.
- OFF: Turns the taillight off.

Figura 5.3: Available light modes.
5.4. Sinais de giro
To indicate a turn, press the Left Turn Light Button (1) or Right Turn Light Button (3) on the remote control. The corresponding signal will flash with an audible clicking sound to alert others. The turn signal remains active for two minutes or until the button is pressed again to cancel.
5.5. Automatic Brake Light
The taillight features a smart brake sensor. When you brake or slow down, the light will automatically highlight brightly for 2 seconds to warn riders behind you.

Figura 5.4: Smart Brake and Turn Signal operation.
5.6. Electric Bell (Horn)
Press the Electric Bell Button (2) on the remote control to activate the 110dB horn. There are 3 selectable horn sounds. This function can be used to alert pedestrians or other cyclists.
5.7. Anti-Theft Vibration Alarm
To activate the anti-theft alarm, press the Arm Button (6) on the remote control. The alarm is triggered by vibration and emits a loud 110dB sound to deter thieves. It has 7 adjustable sensitivity levels and 3 volume levels. In vigilant mode, a first touch triggers a 2-second warning sound. A second touch within 2-12 seconds activates a continuous 30-second alarm with various sound effects.
To deactivate the alarm, press the Disarm Button (7) on the remote control.

Figura 5.5: Anti-theft alarm in action.
6. Mantemento
6.1. Limpeza
Limpe a luz traseira e o mando a distancia cun toque suaveamp cloth. Do not use abrasive cleaners or solvents, as these may damage the device's surface or internal components.
6.2. Impermeabilización
The taillight is IP65 rated, protecting it from rain, dust, and snow. The remote control is IP44 rated. While designed to withstand various weather conditions, avoid submerging the device in water.
6.3. Coidado da batería
Para prolongar a duración da batería, evite descargala completamente con frecuencia. Recargue o dispositivo con regularidade, especialmente se o vai gardar durante un período prolongado.
7 Solución de problemas
- O dispositivo non se acende: Asegúrate de que a batería estea cargada. Conéctaa a unha fonte de alimentación USB e comproba o indicador de carga.
- O control remoto non responde: Check if the remote control's battery needs replacement (if applicable, or if it's rechargeable, ensure it's charged). Ensure the remote is within range of the taillight.
- Turn signals not working: Verify the remote control is paired with the taillight. Re-pair if necessary (refer to manufacturer's specific pairing instructions if not automatically paired).
- Alarm triggering unexpectedly: Adjust the alarm sensitivity settings to a lower level.
- Brake light not activating: Ensure the taillight is securely mounted and the brake sensor is not obstructed.
8. Garantía e soporte
NineLeaf products are designed for durability and performance. For specific warranty information, please refer to the product packaging or contact NineLeaf customer support directly. If you encounter any issues or have questions regarding your NineLeaf Bike Turn Signals, please visit the official NineLeaf store on Amazon or contact their customer service for assistance.
NineLeaf Store Link: Visit the NineLeaf Store