JQTOP SF34R
JQTOP SF34R Smart Bike Tail Light User Manual
Model: SF34R
1. Introduction
Thank you for choosing the JQTOP SF34R Smart Bike Tail Light. This device integrates five essential cycling safety functions into one compact unit: an electric bike horn, an anti-theft vibration alarm, a bright bike tail light, dynamic bike turn signals, and an automatic bike brake light. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance and safety.

Image 1.1: Overview of the JQTOP SF34R Smart Bike Tail Light and its features.
2. Package Contents
Please check the package for the following items:
- JQTOP SF34R Smart Bike Tail Light
- Wireless Remote Control
- Tail Light Mounting Bracket
- Remote Control Handlebar Mount
- USB-C Charging Cable
- User Manual (this document)
3. Product Features
- 5-in-1 Functionality: Electric horn, anti-theft alarm, tail light, turn signals, and brake light.
- Wireless Remote Control: Easily operate all functions from your handlebar. Features a button lock to prevent accidental activation.
- Smart Turn Signals: Left and right turn indicators with audible click sounds for enhanced safety.
- Automatic Brake Light: Integrated G-sensor detects braking and automatically illuminates the tail light brighter for 2 seconds.
- Ultra-Bright Tail Light: 31 premium LED lights with up to 160 lumens output.
- 6 Lighting Modes: Slow Flash, Breathing, Fast Flash, Constant Light, Emergency Light, Off.
- Anti-Theft Alarm: Vibration-activated alarm with adjustable sensitivity.
- Loud Electric Horn: Alerts pedestrians and vehicles.
- USB-C Rechargeable: Convenient and fast charging.
- Waterproof: IP66 rated for all-weather use.
4. Setup and Installation
4.1. Tail Light Installation
- Attach the tail light mounting bracket to your bicycle's seat post. Ensure it is securely fastened.
- Slide the JQTOP SF34R Smart Bike Tail Light into the bracket until it clicks into place.
- Adjust the angle of the tail light for optimal visibility.

Image 4.1: Tail light and remote installation steps.
4.2. Remote Control Installation
- Attach the remote control host to your bicycle's handlebar.
- Install the remote control onto the host.
- Tighten the mount securely. Position the remote control within easy reach of your thumb.
4.3. Seat Post Compatibility
The tail light bracket is designed for round seat posts with a diameter of 27-35 mm. It is not suitable for pannier racks, square seat posts, hexagonal seat posts, or aero seat posts.

Image 4.2: Seat post compatibility details.
5. Operating Instructions
5.1. Remote Control Functions
The remote control features the following buttons:
- Electric Bell Button (Horn): Press to sound the horn.
- Left Turn Light Button: Press to activate the left turn signal. It will flash with an audible click. Press again to turn off.
- Right Turn Light Button: Press to activate the right turn signal. It will flash with an audible click. Press again to turn off.
- Tail Light Button: Press to cycle through the 6 lighting modes (Slow Flash, Breathing, Fast Flash, Constant Light, Emergency Light, Off).
- Arm/Disarm Button (Lock/Unlock Icon): Press to arm or disarm the anti-theft alarm.
5.2. Tail Light Modes
Use the Tail Light Button on the remote to switch between the following modes:
- Slow Flash: Gentle, slow blinking.
- Breathing: Light fades in and out smoothly.
- Fast Flash: Rapid blinking for high visibility.
- Constant Light: Solid illumination.
- Emergency Light: Distinctive flashing pattern for emergencies.
- Off: Light is turned off.
5.3. Turn Signals
To indicate a turn, press the corresponding Left or Right Turn Light button on the remote. The signal will flash with an audible click sound to alert you and others. Press the button again to deactivate the signal.

Image 5.1: Demonstrating turn signal functionality.
5.4. Automatic Brake Light
The integrated G-sensor detects when you slow down or brake. Upon detection, the tail light will automatically illuminate brighter for approximately 2 seconds to alert following traffic. This feature works in Slow Flash, Breathing, Fast Flash, and Constant Light modes.

Image 5.2: Automatic brake light activation.
5.5. Anti-Theft Alarm
To arm the alarm, press the Arm/Disarm button on the remote. The tail light will flash once to confirm it is armed. If the bicycle is moved or vibrated, the alarm will sound. To disarm the alarm, press the Arm/Disarm button again. The alarm has adjustable sensitivity levels (refer to troubleshooting for adjustment).

Image 5.3: Alarm and horn functions.
6. Charging
The JQTOP SF34R Smart Bike Tail Light is equipped with a rechargeable lithium-polymer battery. When the battery is low, the indicator light on the tail light will signal. To charge:
- Locate the USB-C charging port on the tail light.
- Connect the provided USB-C cable to the tail light and plug the other end into a USB power source (e.g., computer, wall adapter).
- The indicator light will show charging status (e.g., red for charging, green for fully charged).
- Charging typically takes a few hours. Avoid overcharging.
7. Maintenance
- Cleaning: Wipe the tail light and remote with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place when not in use. Avoid extreme temperatures.
- Battery Care: For optimal battery life, charge the device regularly, even if not used frequently. Do not allow the battery to fully deplete for extended periods.
- Water Resistance: While IP66 rated, avoid submerging the device in water. Ensure the USB-C port cover is securely closed.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tail light does not turn on. | Battery is depleted. | Charge the tail light using the USB-C cable. |
| Remote control is unresponsive. | Remote battery low or out of range. | Ensure the remote is within 30-60m of the tail light. Replace remote battery if applicable (check manual for battery type). |
| Alarm is too sensitive or not sensitive enough. | Alarm sensitivity setting needs adjustment. | While disarmed, press and hold the Arm/Disarm button for 3 seconds. The tail light will flash to indicate sensitivity levels. Press the Tail Light button to cycle through levels (e.g., 1 flash for low, 3 flashes for high). Press Arm/Disarm again to confirm. |
| Turn signals do not work. | Battery low or remote issue. | Charge the tail light. Check remote battery. Ensure clear line of sight if possible. |
| Brake light not activating. | Not in compatible mode or sensor issue. | Ensure the tail light is in Slow Flash, Breathing, Fast Flash, or Constant Light mode. Ensure the tail light is mounted securely and not loose. |
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | SF34R |
| Brand | JQTOP |
| Light Source | 31 Premium LEDs |
| Max Light Output | 160 Lumens |
| Lighting Modes | 6 (Slow Flash, Breathing, Fast Flash, Constant Light, Emergency Light, Off) |
| Power Source | Battery Powered (1 Lithium-polymer - included) |
| Charging Port | USB-C |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Water Resistance | IP66 (Waterproof) |
| Remote Wireless Range | Approx. 30-60 meters |
| Dimensions (Package) | 13.8 x 9 x 6.6 cm |
| Weight (Package) | 260 grams |
| Mounting Type | Handlebar (Remote), Seat Post (Tail Light) |
| Seat Post Compatibility | Round, 27-35 mm diameter |
10. Safety Information
- Always ensure the tail light is securely mounted before riding.
- Do not look directly into the LED lights, as this may cause temporary vision impairment.
- Keep the device out of reach of children.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage or injury.
- Always follow local traffic laws and regulations regarding bicycle lighting.
- This device is designed to enhance safety but does not replace safe cycling practices. Always be aware of your surroundings.
11. Warranty and Support
For warranty information and customer support, please refer to the retailer where you purchased this product or visit the official JQTOP website. Please retain your proof of purchase for warranty claims.
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