1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your VSYSTO Bicycle Rear Camera System F4.5K. This system features a 4.5-inch IPS display, 1080P HD recording with a 140-degree wide-angle lens, infrared night vision, integrated WiFi and GPS, and a multi-function wired controller. Please read this manual thoroughly before using the product to ensure proper function and safety.
2. What's in the Box
Verify that all components are present in the package:
- Host with Display and Mount
- Camera (Rear)
- Charging Cable
- GPS Module
- Wired Controller
- Light Shield
- Host Bracket
- Camera Bracket
- Taillight Bracket
- USB Test Cable + Cable Ties + TF Plug Screw

Figure 2.1: Package Contents. This image displays all the items included in the VSYSTO F4.5K bicycle rear camera system box, such as the main display unit, rear camera, GPS module, wired controller, and mounting accessories.
3. Setup and Installation
3.1. Handlebar Bracket Installation for Display Unit
- Align the bracket with the back of the display unit and insert the screw piece into the screw hole.
- Tighten with a wrench.
- Select the appropriate gasket based on your handlebar size.
- Place the other half of the bracket, insert the screw piece, and tighten the nut with a wrench to secure the display unit to the handlebar.

Figure 3.1: Handlebar Installation. This image illustrates the four-step process for securely attaching the 4.5-inch display unit to the bicycle handlebar using the provided bracket and screws.
3.2. Rear Camera Installation
- Align the camera bracket with the back of the camera and insert it.
- Insert the metal sheet into the screw, cover the nut, and tighten with a wrench.
- Unscrew the screws on the bracket.
- Place the bracket in a suitable position under the seat cushion.
- Tighten the screws with a wrench.
- Ensure the installation is complete and secure.

Figure 3.2: Rear Camera Installation. This image provides a six-step visual guide for mounting the rear camera securely under the bicycle's seat cushion.
3.3. Connection Diagram
Connect the camera, GPS module, and wired controller to the main host unit as shown in the diagram. Ensure all connections are secure and waterproof plugs are properly seated.

Figure 3.3: Connection Diagram. This diagram illustrates how to connect the GPS module, wired controller, and camera to the main host unit, emphasizing the use of waterproof plugs.
4. Operating Instructions
4.1. Multi-function Wired Controller
The wired controller provides easy access to key functions without needing to stop. It features four buttons and indicator lights:
- Up Button: Activates/deactivates the microphone.
- Down Button: Enters assisted driving mode; switches between different function interfaces.
- OK Button: Accesses the menu to adjust functions; pauses recording.
- Function Button: Activates emergency recording mode; turns the bicycle rear camera on/off.
- Red/Blue Indicator Light: Displays DVR recording status and GPS positioning status.

Figure 4.1: Wired Controller Functions. This image highlights the various buttons on the wired controller and their respective functions, including microphone control, assisted driving mode, menu access, and emergency recording.
4.2. Display Modes and Assisted Driving Mode
The 4.5-inch IPS display provides clear visuals and various informational interfaces. In assisted driving mode (accessed via the Down button on the wired controller), you can view:
- Current vehicle speed, time, calories burned, and cycling distance.
- Altitude, longitude, latitude, and atmospheric pressure.
- Short-term and long-term recorded driving speed and distance.
- Current time and date.

Figure 4.2: Multifunctional Display. This image shows the various data points available on the display, including speed, distance, time, and GPS information, along with features like overspeed warning and shutdown countdown.

Figure 4.3: Calories and Memory Display. This image illustrates how the system displays calories burned and provides cumulative and session mileage data for fitness tracking.
4.3. Recording Features
The camera system is designed to capture clear and reliable footage of your rides.
- 1080P HD & 140° Wide Angle: The 140-degree wide-angle lens captures clear, high-resolution 1080P images, covering multiple lanes and reducing blind spots.
- Infrared Night Vision: Equipped with specialized night vision technologies (starlight night vision, infrared night vision) to ensure clear footage even in low-light conditions.

Figure 4.4: 140-Degree Wide Angle Lens. This diagram visually represents the broad field of view provided by the camera, effectively covering multiple lanes behind the cyclist.

Figure 4.5: Infrared + Starlight Night Vision. This image demonstrates the camera's capability to capture clear footage in both daytime and low-light nighttime conditions using advanced night vision technology.
4.4. Loop Recording and Emergency Recording
- Loop Recording: You can set loop recording durations to 1, 2, 3, or 5 minutes. When the memory card is full, the system automatically overwrites the oldest files to ensure continuous recording.
- Emergency Recording (G-Sensor): The built-in G-sensor automatically triggers emergency recording upon detecting a collision, saving the footage to prevent it from being overwritten.
- Manual Emergency Recording: Press the Function button on the wired controller to manually activate emergency recording.
Note: Emergency files (starting with "KEY" and "GSR") can store up to 10 videos. If more than 10 emergency videos are present, the system will automatically delete the oldest one.

Figure 4.6: Emergency Recording. This image depicts both automatic emergency recording triggered by a G-sensor during a collision and manual emergency recording activated by the wired controller.
4.5. WiFi Connectivity and GPS Functionality
- WiFi Connection: The integrated WiFi module allows you to transfer videos from the SD card to your phone via the "WiFi Camera" app. This facilitates easy sharing and editing of videos without removing the memory card.
- GPS Functionality: The GPS module provides precise positioning, automatically generating driving speed and track data. This information can be viewed on the mobile app and PC software ("DV Player").

Figure 4.7: WiFi Connection Steps. This image provides a four-step guide on how to connect the VSYSTO camera system to your smartphone using the "WiFi Camera" app.

Figure 4.8: Dedicated Mobile App and GPS Function. This image illustrates the capabilities of the mobile app for previewing, downloading, and sharing videos, alongside the GPS function for viewing driving speed and trajectory on a map.
4.6. Overspeed Warning and Shutdown Reminder
- Overspeed Warning: The system will issue an alarm prompt if your driving speed exceeds a preset value, promoting safer riding habits.
- Shutdown Reminder: When the device is turned off, it enters a countdown page displaying mileage and riding time, and reminds you to take your belongings. If no vibration is detected within 5 minutes, it automatically shuts down and enters the countdown page.
4.7. Battery and Charging
The system is powered by a 3000 mAh rechargeable battery, providing up to 3 hours of continuous use. It supports recording while charging and can be charged via USB (power bank or 5V 2A charger).
Caution: If the input voltage exceeds 5V, it may damage the recorder.

Figure 4.9: Large Battery Capacity. This image highlights the 3000mAh rechargeable battery, its 3.3-hour working time, and the USB charging capability, including support for recording while charging.
5. Maintenance
- Cleaning: Use a soft, damp cloth to clean the display unit and camera lenses. Avoid abrasive cleaners or solvents.
- Waterproofing: The system features a fully waterproof design (IP65 for main unit, IP67 for camera and other accessories). However, avoid using high-pressure water guns directly on the device, as this may cause damage.
- Storage: Store the device in a cool, dry place when not in use.
- Memory Card: Regularly format the microSD card to maintain optimal recording performance.

Figure 5.1: Full Body Waterproof. This image demonstrates the waterproof capabilities of the system, suitable for various weather conditions, and shows the main unit and camera being splashed with water.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery; loose connection; faulty power source. | Charge the device fully. Check all cable connections. Ensure the power source (e.g., power bank) is functional. |
| Recording stops unexpectedly. | Memory card full; memory card error; low battery. | Format the memory card. Replace the memory card if corrupted. Charge the device. |
| WiFi connection issues. | Incorrect password; app not updated; interference. | Verify WiFi password. Update the "WiFi Camera" app. Try connecting in an area with less wireless interference. |
| GPS signal not acquired. | Obstructed view of sky; GPS module not connected. | Ensure the GPS module has a clear view of the sky. Check the GPS module connection to the host. |
| Display is blank or frozen. | System error; power issue. | Restart the device. If the problem persists, contact customer support. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | VSYSTO |
| Model Name | F4.5K |
| Part Number | T45 |
| Vehicle Service Type | Bicycle |
| Connectivity Technology | Wi-Fi |
| Special Features | 1080P HD Infrared Night Vision Camera, 140-degree Wide Angle Lens, Loop Recording, Emergency Recording, Wi-Fi Module, Assisted Driving Mode, Shutdown Reminder, 4.5-inch Display, GPS, Handlebar Control, Waterproof, Rechargeable, Overspeed Warning |
| Video Recording Resolution | 1080p |
| Field of View | 140 Degrees |
| Control Method | Application, Wired Controller |
| Product Dimensions (L x W x H) | 11.5 x 7.5 x 2.5 cm |
| Display Size | 4.5 Inches |
| Flash Memory Type | microSD |
| Optical Sensor Size | 1/3 inch |
| Battery Type | Lithium-ion (3000 mAh) |
| Maximum Supported Flash Memory Size | 256 GB |
| Item Weight | 1450 Grams |
| Manufacturer | Huizhou V-SYS Technology Co.,Ltd. |
| Country of Origin | China |
8. Warranty and Support
This VSYSTO product comes with a 1-year manufacturer's warranty. For technical support, warranty claims, or any inquiries regarding your product, please contact the seller or refer to the official VSYSTO website for contact information.
