1. Product Overview
The ANTUSI A8Pro is an advanced 6-in-1 smart bike tail light designed to enhance cycling safety and security. It integrates multiple functions including a cycling rear lamp, accurate braking light, wireless bell, remote call, and a robust anti-theft siren. The A8Pro model features adjustable alarm sensitivity, 5 distinct ring tones, and adjustable tone volume for a personalized experience.

2. Package Contents
Please check the package to ensure all items are present:
- A8Pro Smart Bike Tail Light
- Wireless Remote Control
- USB Charging Cable
- Saddle Rail Mount Bracket
- Round Seat Post Mount Bracket
- Mounting Hardware (screws, Allen key, zip ties, adhesive pad)

3. Setup and Installation
The A8Pro offers a dual mount system for versatile installation on your bicycle.
3.1. Mounting Options
You can choose to install the tail light either on the saddle rail or on a round seat post.
- Saddle Rail Mount: Attach the saddle rail bracket to the rails under your bicycle seat using the provided hardware. Ensure it is securely fastened.
- Seat Post Mount: Use the round seat post bracket to attach the light to your seat post. Secure it with the provided zip ties or other fasteners.
Once the bracket is installed, slide the A8Pro tail light onto the bracket until it clicks into place. Ensure the light is facing directly backward for optimal visibility.



3.2. Remote Control Pairing (if not pre-paired)
Typically, the remote control comes pre-paired with the tail light. If re-pairing is needed:
- Ensure the tail light is charged and turned off.
- Press and hold the main button on the tail light until it enters pairing mode (usually indicated by a specific light pattern).
- Press any button on the remote control. The tail light will confirm successful pairing (e.g., by flashing or beeping).
4. Operating Instructions
The A8Pro offers multiple functionalities controlled via the main unit button and the wireless remote.
4.1. Tail Light Operation
- Power On/Off: Press and hold the main button on the tail light for 2-3 seconds.
- Change Light Mode: Short press the main button on the tail light to cycle through the 4 available modes:
- Auto Fast Strobe
- Breathing
- Manual Pop Strobe
- Steady
- Smart Braking: The light features an accurate braking warning system. When deceleration is detected, the light will automatically brighten to signal braking, enhancing safety.
- Intelligent Sensing: The light can automatically adjust its brightness or mode based on ambient light conditions or movement, optimizing battery life and visibility.
4.2. Remote Control Functions
The wireless remote control provides convenient access to various features:
- Arm/Disarm Alarm: Use the dedicated buttons on the remote to arm the anti-theft alarm (e.g., lock icon) or disarm it (e.g., unlock icon). When armed, any significant vibration will trigger a 115dB siren.
- Wireless Bell/Horn: Press the bell/horn button on the remote to activate the bicycle bell sound, alerting pedestrians or other cyclists.
- Remote Call: This function can be used to locate your bike in a crowded area by triggering a sound from the tail light.
- Adjust Alarm Sensitivity: The A8Pro allows adjustment of the alarm's vibration sensitivity. Refer to the specific instructions for your model on how to enter sensitivity adjustment mode (usually a combination of remote buttons or a sequence of presses on the main unit).
- Change Ring Tones/Volume: The A8Pro offers 5 different ring tones and adjustable volume for the bell/horn and alarm. Consult your product's specific guide for the sequence to change these settings.
5. Charging and Battery Maintenance
5.1. Tail Light Charging
The A8Pro tail light is USB rechargeable.
- Locate the USB charging port on the tail light (usually covered by a rubber flap).
- Connect the provided USB charging cable to the tail light and to a 5V 2A (max) USB power source (e.g., computer, wall adapter, power bank).
- A charging indicator light will show the charging status (e.g., red for charging, green/blue for fully charged).
- Charging time is approximately 3 hours for a full charge.
- The battery capacity is 800mAH, providing a runtime of approximately 8-30 hours depending on the mode used.

5.2. Remote Control Battery
The remote control is powered by a replaceable 12V/27A battery. This battery is not rechargeable. When the remote's range or responsiveness decreases, it's time to replace the battery.
5.3. Water Resistance
The A8Pro has an IP65 ingress protection rating, meaning it is water splash proof. It is designed to withstand rain and splashes but should not be submerged in water.
6. Troubleshooting
- Light not turning on: Ensure the battery is charged. Connect to a USB power source and check the charging indicator.
- Remote not responding: Check the remote control battery (12V/27A). Replace if necessary. If still unresponsive, attempt to re-pair the remote with the tail light (refer to Section 3.2).
- Alarm not triggering or too sensitive: Adjust the alarm sensitivity setting. Refer to the product's specific instructions for how to do this, as it often involves a sequence of button presses on the remote or main unit.
- Brake sensing not working: Ensure the light is mounted securely and oriented correctly. The sensor needs a stable position to accurately detect deceleration.
- Short battery life: Ensure the light is fully charged. Consider using modes with lower power consumption if extended runtime is needed. Extreme cold weather can also affect battery performance.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | A8 PRO |
| Brand Name | ANTUSI |
| Type | Tail Light |
| Light Source | LED COB Red Light |
| Light Modes | 4 modes (Auto Fast Strobe & Breathing, Manual Pop Strobe & Steady) |
| Intelligent Sensing | Yes |
| Support Dimmer | 2 - 4 Files |
| Alarm Sound Level | 115dB (5 tones, volume adjustable) |
| Power Supply | Battery (USB Rechargeable) |
| Tail Light Battery | 800mAH, runtime approx. 8-30Hrs |
| Controller Battery | 12V/27A (replaceable, not chargeable) |
| Ingress Protection | IP65 (water splash proof) |
| Mounting Placement | Seatpost / Saddle Rail |
| Body Material | ABS |
| Certification | CE, RoHS |
| Origin | Mainland China |
| Product Dimensions (approx.) | Length: 17cm, Width: 11cm, Height: 5cm |
| Net Weight (approx.) | Lamp: 66g; Controller: 23g |
8. User Tips
- Optimal Alarm Placement: For best anti-theft performance, ensure the light is mounted securely and not easily accessible for tampering.
- Regular Charging: To maximize battery life and ensure readiness, charge the tail light regularly, especially before long rides.
- Remote Battery Check: If you notice a decrease in remote control range or responsiveness, replace the 12V/27A battery promptly.
- Brake Sensing Calibration: After installation, gently rock your bike to test the brake sensing feature. If it's not consistent, re-check the mounting stability.
- Customize Settings: Take advantage of the adjustable alarm sensitivity, ring tones, and volume to suit your personal preferences and riding environment.
9. Warranty and Support
For any warranty claims, technical support, or product inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
The product is certified with CE and RoHS standards, indicating compliance with health, safety, and environmental protection standards.





