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The GREENCYCLE Smart Bike Tail Light is a versatile 5-in-1 device designed to enhance cycling safety and security. It integrates a warning light, brake light, turn signals, electric bell, and an anti-theft alarm. This manual provides detailed instructions for setup, operation, and maintenance of your new smart bike tail light.

Image: The GREENCYCLE Smart Bike Tail Light, showing the main unit with its integrated LED lights and the accompanying wireless remote control.
Configuración e instalación
1. Charging the Tail Light
Before first use, fully charge the tail light. Connect the provided USB-C charging cable to the tail light's charging port and a standard USB 5V power source (e.g., computer USB port, wall adapter). The charging indicator will show the charging status.

Image: The tail light connected to a USB-C charging cable, illustrating the charging process. A full charge provides up to 70 hours of use in fast blinking mode.
- Batería: Batería de litio 3.7V 2000mAh
- Puerto de carga: Standard USB-C 5V
- Tiempo de carga completo: Aproximadamente 7 horas
- Tiempo en espera: Hasta 4-8 meses
2. Instalación de la luz trasera
The tail light can be mounted on the bike pipe or under the bike saddle using the provided mounting hardware. Ensure the light is securely fastened and visible from the rear.
- Choose a mounting location that does not obstruct the light's visibility or the rider's movement.
- Use the appropriate bracket and screws to firmly attach the tail light.
3. Instalación del control remoto
The wireless remote control clamps easily to handlebars with a diameter between 0.78-0.94 inches.
- Attach the remote control to a convenient location on your handlebar, ensuring easy access to its buttons while riding.
- The remote control uses a CR2032 button battery with a standby time of 3-5 years (based on 30 uses per day).
- Alcance inalámbrico: 30-60 metros.
Instrucciones de funcionamiento
1. Modos de luz
The tail light features 6 distinct light modes for various riding conditions. These modes can be easily selected using the remote control.

Image: Visual representation of the six light modes: Red Light (Slow Flashing, Breathing, Blinking, Steady Light), Yellow Flashing Light (Emergency Light), and Yellow Flowing Light (Turn Signal Light).
- Modos de luz roja: Slow Flashing, Breathing, Fast Blinking, Steady Light.
- Luz intermitente amarilla: Luz de emergencia.
- Yellow Flowing Light: Turn Signal Light.
- Press the light mode button on the remote to cycle through the available modes.
2. Smart Auto ON/OFF Function
This feature helps conserve battery life by automatically adjusting light operation based on ambient light and motion.
- In Slow Flashing and Breathing modes, the tail light will automatically turn off after 30 seconds of inactivity in dark environments. It will turn back on when motion is detected.
- In bright environments, the light automatically turns off to save power.
- For daytime use, select Fast Blinking or Steady Light modes to ensure continuous operation.
3. Automatic Brake Light
The tail light is equipped with an intelligent induction brake feature.

Image: A cyclist on a road, with an orange radar-like graphic indicating the intelligent induction brake light activating when the rider slows down or brakes.
- The brake light will highlight immediately when you brake or slow down, providing an additional safety warning to traffic behind you.
4. Turn Signals and Electric Bell
The remote control allows for easy activation of turn signals and the electric bell.

Image: Two cyclists on a road, with an inset showing the remote control on a handlebar and a hand pressing a button, indicating wireless control for turn signals and horn. The wireless range is noted as 30-60m.
- Señales de giro: Press the right or left turn signal button on the remote before turning or changing lanes. The corresponding signal will activate with a clicking sound.
- Timbre eléctrico: Press the bell button on the remote to activate the 110-decibel loud horn sound, alerting pedestrians and other drivers. There are 3 horn sounds to choose from.
5. Anti-Theft Alarm Function
The tail light includes a vibration-triggered anti-theft alarm to deter potential thieves.

Image: A bicycle parked outdoors with a dog nearby, and a graphic indicating a 110 dB alarm sound, emphasizing the anti-theft feature.
- To arm the alarm, take off the remote control and press the arm button when parking your bike.
- The alarm will trigger with a loud sound (110 dB) and blinking light if vibration is detected.
- Sensibilidad: 7 adjustable levels from gentle touch to strong impact.
- To disarm the alarm, press the disarm button on the remote.
Mantenimiento
1. Limpieza
Limpie la luz trasera y el control remoto con un paño suave.amp paño. Evite utilizar limpiadores abrasivos o disolventes que puedan dañar el dispositivo.
2. Cuidado de la batería
- Recharge the tail light regularly, especially if it will be stored for an extended period, to maintain battery health.
- The remote control battery (CR2032) is user-replaceable if needed after its 3-5 year lifespan.
3. Durabilidad y resistencia a la intemperie
The tail light is constructed from PC+ anti-UV material, designed for durability in various weather conditions.

Image: A collage showing the tail light's resistance to various weather conditions including thunder, sun exposure, snowstorm, and rainstorm, highlighting its waterproof and dustproof properties.
- Nivel de resistencia al agua: IP64 (Waterproof and Dustproof).
- Resistencia a la temperatura: -40 °C a +70 °C (-40 °F a 158 °F).
- It is designed to withstand small to moderate rain, wind, and extreme temperatures.
Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| Tail light not turning on. | Low battery; Remote control not paired or out of range; Light in auto-off mode in bright environment. | Charge the tail light; Ensure remote is within 30-60m range and battery is good; Switch to Fast Blinking or Steady Light mode for continuous operation. |
| Alarm not triggering or too sensitive. | Sensitivity setting is too low/high; Alarm not armed. | Adjust the 7-level sensitivity setting via the remote; Ensure the alarm is armed before leaving the bike. |
| Turn signals or bell not responding. | Remote control battery low; Remote out of range. | Replace CR2032 battery in remote; Move closer to the tail light. |
| La luz de freno no se activa. | Obstrucción del sensor; Mal funcionamiento. | Ensure the tail light is mounted correctly and the sensor area is clear; If issue persists, contact support. |
Presupuesto
- Nombre del modelo: KS-SF31
- Número de pieza: M-KS-SF31-1PK
- Color: Negro
- Material: Polycarbonate (PC+ anti-UV)
- Fuente de energía: Funciona con pilas
- Batería de luz trasera: Batería de litio 3.7V 2000mAh
- Tail Light Standby Time: 4-8 meses
- Batería del control remoto: Pila de botón CR2032
- Remote Control Standby Time: 3-5 years (30 times/day)
- Puerto de carga: Standard USB-C 5V
- Frecuencia de trabajo: 433.92 MHz
- Alcance inalámbrico: 30-60 m
- Brillo: 160 lúmenes
- Number of Light Settings: 6
- Nivel de resistencia al agua: IP64 (impermeable)
- Temperatura ambiente de trabajo: -40 °C a +70 °C (-40 °F a 158 °F)
- Humedad del ambiente de trabajo: <80%
- Tipo de montaje: On the bike pipe / Under the bike saddle
- Posición de la pieza de automóvil: Trasero
Garantía y soporte
For warranty information, technical support, or any inquiries regarding your GREENCYCLE Smart Bike Tail Light, please contact GREENCYCLE customer service directly. Refer to the product packaging or the official GREENCYCLE websitio para detalles de contacto.
Fabricante: GREENCYCLE TECH INC





