1. Introduction
The RYSJM X100 Solar Car HUD GPS Head-up Display is an advanced automotive accessory designed to enhance your driving experience by providing crucial information directly in your line of sight. Utilizing a GPS+Beidou dual-channel module, it offers real-time monitoring of speed, altitude, odometer, time, and date with high precision. This device features a dual power supply system (solar energy and USB charging) and an HD large LCD display with automatic brightness adjustment for optimal visibility day and night. It also incorporates safety features such as overspeed alarms and fatigue driving reminders. This manual will guide you through the setup, operation, and maintenance of your X100 HUD.
2. Package Contents
Please check the box for the following items:
- 1 x X100 Head Up Display Unit
- 1 x USB Charging Cable
- 1 x Non-slip Mat
- 1 x User Manual

3. Key Features
- Dual Power Supply: Supports both solar energy and USB charging for continuous operation.
- GPS+Beidou Dual-Channel Module: Ensures high-precision data acquisition for speed, altitude, and location.
- HD Large LCD Display: Clear and easy-to-read display of information.
- Automatic Brightness Adjustment: Adapts screen brightness for optimal visibility in various lighting conditions (day and night).
- Overspeed Alarm: Customizable alarm to alert you when exceeding a set speed limit.
- Fatigue Driving Reminder: Alerts you after a default of 4 hours of continuous driving (customizable).
- Automatic On/Off: Powers on when the car starts and off when the car stops, conserving power.
- Real-time Data Display: Shows current speed, total mileage driven (odometer), altitude, electronic clock, and date.
- Universal Compatibility: Suitable for new energy vehicles, diesel vehicles, RVs, buses, trucks, and fuel vehicles.

4. Setup and Installation
4.1 Initial Charging
Before first use, please charge the device via the USB cable for 4-5 hours to ensure the internal battery is fully charged. This is important for optimal performance, especially for solar charging functionality.

4.2 Placement
Place the X100 HUD on your vehicle's dashboard. Use the provided non-slip mat to secure the device and prevent it from moving during driving. Ensure the solar panel on top of the unit is exposed to sunlight for efficient solar charging.
4.3 Power Connection
The device can be powered via its solar panel or by connecting the USB cable to a USB port in your vehicle. The device will automatically power on when the car starts and initiate hibernation when the car stops.

4.4 GPS Signal Acquisition
Upon powering on, the device will automatically search for GPS satellite signals. This may take a few moments, especially during the first use or if the device has been moved a significant distance. Ensure a clear view of the sky for faster signal acquisition.
5. Operating Instructions
5.1 Display Overview

The X100 HUD features a clear display with the following indicators:
- ODO: Total mileage driven.
- GPS Vehicle Speed: Current driving speed.
- Altitude: Current altitude based on GPS data.
- Overspeed Alarm "1" & "2": Indicators for two configurable overspeed alarm thresholds.
- Sound Switch: Indicates if sound alerts are active.
- Coulometer: Battery charge indicator.
- Number of Satellite Signals: Shows the strength and number of acquired GPS satellites.
- Electronic Clock: Current time.
- Date: Current date.
5.2 Button Functions
The device has four buttons for control. Refer to the physical unit and the included manual for exact button layout and functions. Generally, these buttons are used for:
- Power On/Off (long press)
- Switching display modes (e.g., KM/H to MPH)
- Setting overspeed alarm values
- Adjusting other parameters

5.3 Setting Overspeed Alarms
The X100 allows you to set two different overspeed alarm modes. You can customize the speed threshold for each alarm. When your vehicle exceeds the set speed, the device will provide a visual and/or audible warning.
- City Mode: Typically a lower speed threshold for urban driving.
- High-speed Mode: A higher speed threshold for highway driving.
Consult the detailed instructions in the included paper manual for specific steps on how to enter the settings menu and adjust these values using the control buttons.

5.4 Fatigue Driving Reminder
The device includes a fatigue driving reminder. The default alarm value is 4 hours of continuous driving. This duration can be adjusted through the device settings. When the set time is reached, the device will alert you to take a break.

5.5 Unit Switching (KM/H to MPH)
The X100 HUD supports switching between Kilometers per Hour (KM/H) and Miles per Hour (MPH). This is typically done by a short press of one of the control buttons. Refer to the included manual for the exact button and procedure.
6. Care and Maintenance
- Keep the device clean by wiping it with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Ensure the solar panel is free from dust and obstructions to maintain efficient charging.
- Avoid exposing the device to extreme temperatures or direct moisture for prolonged periods.
- Do not attempt to disassemble or repair the device yourself, as this will void the warranty.
7. Troubleshooting
7.1 No Display / Device Not Turning On
- Ensure the device is fully charged via USB before first use.
- Check if the USB cable is securely connected if using USB power.
- If relying on solar power, ensure the solar panel has sufficient exposure to sunlight.
- The device automatically turns on/off with the car engine; verify the car is running.
7.2 Inaccurate Speed Reading
- Ensure the device has a clear view of the sky to receive strong GPS signals.
- Speed accuracy is typically <0.36 Km/h, minor discrepancies with the vehicle's speedometer are normal due to different measurement methods.
7.3 GPS Signal Loss
- Driving through tunnels, dense urban areas, or under heavy tree cover can temporarily disrupt GPS signals. The display should resume once a clear signal is re-established.
7.4 Alarms Not Functioning
- Check the device settings to ensure overspeed alarms and fatigue driving reminders are enabled and configured with appropriate thresholds.
- Verify the sound switch is active if audible alerts are desired.
8. Specifications
| Attribute | Value |
|---|---|
| Model | X100 |
| Brand Name | RYSJM |
| Material | ABS+PC |
| Display Channel | HD LCD Display |
| Rated Power | GPS |
| Wire or Wireless | GPS HUD (Wireless) |
| Battery Capacity | 1000mAh |
| Operating Temperature | -40°C ~ +80°C |
| Speed Accuracy | <0.36 Km/h |
| GPS Cold Start Time | 32s (average) |
| GPS Warm Start Time | 1s (average) |
| GPS Data Refresh Rate | 1s |
| Wireless Transmission Frequency | 2.4GHz |
| Dimensions (L x W x H) | 125mm x 100mm x 45mm (approx. 4.92in x 3.93in x 1.77in) |

9. User Tips
Based on general user experiences with similar devices, here are some tips for optimal use:
- Dashboard Placement: For best visibility and solar charging, place the HUD on a flat, unobstructed part of your dashboard, ideally close to the windshield.
- Initial GPS Lock: The first time you use the device, or after a long period of inactivity, it might take a few minutes to acquire a GPS signal. Drive in an open area for faster lock-on.
- Brightness: The auto-brightness feature works well, but if you find the display too dim or bright in specific conditions, check if there's a manual adjustment option in the settings.
- Power Saving: While the device has solar charging, for extended periods of parking or low light conditions, consider using the USB connection to maintain battery charge.
- Unit Consistency: Ensure the speed unit (KM/H or MPH) on the HUD matches your vehicle's speedometer for consistent readings.
No specific user tips from reviews or Q&A were available for this product.
10. Warranty and Support
The RYSJM X100 Solar Car HUD GPS Head-up Display comes with a standard manufacturer's warranty. For detailed information regarding warranty coverage, terms, and conditions, please refer to the warranty card included in your package or contact the seller directly.
For technical support, troubleshooting assistance beyond this manual, or inquiries about replacement parts, please reach out to the RYSJM customer service team or the retailer from whom you purchased the product. Keep your purchase receipt or order number handy when contacting support.





