1. Introduction
The ATOTO RCR04W is a high-definition car live rear view camera designed to enhance driving safety by providing a clear and wide-angle view of the area behind your vehicle. This camera is specifically engineered for seamless integration with ATOTO S8 MS/UN/PN series head units, offering features such as 1080P HD resolution, High Dynamic Range (HDR), and a 145-degree wide viewing angle. It is built to be waterproof and operate reliably across a wide range of temperatures.
2. Specifications
| Feature | Specification |
|---|---|
| Model | RCR04W |
| Lens Material | Glass |
| Shell Material | Stainless Steel |
| Wire or Wireless | Wire |
| Camera Resolution | 1920x1080 (1080P HD) |
| Viewing Angle | 145° |
| Guiding Line | Yes |
| Video Cable Length | 6M (8m/26ft extension cable included) |
| Waterproof Rating | IP67 |
| Power Consumption | 0.45W |
| Working Temperature | -4°F ~ +158°F (-20°C ~ +70°C) |
| Special Features | HDR, NightShot, Backlight Compensation (BLC), Automatic Gain Control (AGC) |
| Interface | USB 2.0 |
| Max External Memory | 256GB (for recording, MicroSD card not included) |
| Compatible Head Units | ATOTO S8PN, S8UN, S8MS series |
| Certifications | CE, FCC, RoHS |
3. Package Contents
- 1 x ATOTO RCR04W Rear Recording Camera
- 1 x Extension Cable for AC-RCR04W (8m/26ft)
- 1 x Online Manual Page (refer to this document)

4. Compatibility
The ATOTO RCR04W camera is designed for specific ATOTO head units. Please ensure your head unit is compatible before installation.
- Compatible with: ATOTO S8PN, S8UN, and S8MS series head units.
- Note: When used with the S8 UN series, it functions as a recording camera.
- Not compatible with: X10 Series, A6 PF/PP Series, F7 Series, PND Series.
For recording functionality, a USB Card Reader and a High-Endurance MicroSD card (up to 128GB) are required and are not included with the camera.

5. Setup and Installation
Installation of the ATOTO RCR04W camera involves mounting the camera and routing its wiring to the compatible ATOTO head unit. Professional installation is recommended due to the nature of car electronics and wiring.
5.1 Mounting the Camera
- Choose a suitable location on the rear of your vehicle for optimal viewing angle. Common locations include above the license plate or near the trunk handle.
- Securely attach the camera using the provided mounting bracket and screws. Ensure the camera is stable and its lens is unobstructed.
5.2 Wiring Connection
- Route the camera's video cable from the mounting location to the ATOTO head unit. This typically involves carefully tucking the cable along the vehicle's interior trim to conceal it and protect it from damage.
- Connect the camera's video cable to the designated rear camera input on your ATOTO S8 series head unit. Refer to your head unit's specific manual for the exact port location.
- Connect the power wire of the camera to a suitable power source, usually the reverse light circuit, so the camera activates when the vehicle is in reverse. Alternatively, for continuous live rear view, connect to a constant 12V accessory power source.
- Ensure all connections are secure and properly insulated to prevent short circuits or signal interference.

6. Operating Instructions
Once installed and connected to a compatible ATOTO S8 series head unit, the RCR04W camera provides a live video feed to your car's display.
6.1 Rear View Display
- When the vehicle is shifted into reverse, the camera feed will automatically display on your ATOTO head unit screen, showing a 145° wide-angle view of the rear.
- The display includes guiding lines to assist with parking and maneuvering.

6.2 Live Rear View While Driving
For continuous monitoring, the camera can provide a live rear view while driving forward, depending on your head unit's settings and wiring configuration.

6.3 Advanced Imaging Features
- 1080P HD & HDR: The camera captures video in 1080P High Definition with High Dynamic Range for clear and detailed images, even in challenging lighting conditions.
- NightShot Function: Enhances visibility in low-light environments, providing a clearer image at night.
- Backlight Compensation (BLC): Automatically adjusts the image to prevent overexposure from strong light sources, such as headlights, ensuring objects in darker areas remain visible.
- Automatic Gain Control (AGC): Dynamically adjusts the video signal to provide clearer images by optimizing brightness and contrast.


7. Maintenance
To ensure optimal performance and longevity of your ATOTO RCR04W camera, follow these maintenance guidelines:
- Cleaning the Lens: Regularly clean the camera lens with a soft, damp cloth to remove dirt, dust, or water spots that may obstruct the view. Avoid abrasive cleaners.
- Checking Connections: Periodically inspect the wiring connections for any signs of wear, corrosion, or looseness. Ensure all connections remain secure.
- Environmental Protection: The camera is IP67 waterproof, but avoid directing high-pressure water jets directly at the camera for extended periods.
8. Troubleshooting
8.1 No Image on Screen
- Check Power: Ensure the camera is receiving power. Verify the power connection to the reverse light circuit or constant 12V source.
- Check Video Cable: Confirm the video cable is securely connected to both the camera and the correct input on the ATOTO head unit.
- Head Unit Settings: Verify that the head unit's settings are configured to display the rear camera input.
- Compatibility: Double-check that your ATOTO head unit is one of the compatible S8 series models (S8PN, S8UN, S8MS).
8.2 Poor Image Quality
- Clean Lens: Clean the camera lens thoroughly.
- Lighting Conditions: While the camera has HDR and NightShot, extreme low light or direct glare can still affect image quality.
- Cable Integrity: Inspect the video cable for any damage or kinks that might interfere with signal transmission.
8.3 Guiding Lines Not Appearing
- Head Unit Settings: Check your ATOTO head unit's settings for options to enable or disable guiding lines.
8.4 Camera Not Recording (S8 UN only)
- MicroSD Card: Ensure a high-endurance MicroSD card (up to 128GB) is inserted into a USB card reader and connected to the head unit.
- Head Unit Software: Verify that the recording software on your S8 UN head unit is properly configured and functioning.
9. User Tips
- The 145° wide-angle view significantly aids in reversing, making maneuvers easier and safer.
- Leverage the 1080P HD and HDR capabilities to ensure video details are as clear as possible, especially when reviewing recorded footage.
- For optimal recording performance with S8 UN head units, use a high-endurance MicroSD card (up to 128GB) to handle continuous writing.
- Consider professional installation to ensure proper wiring and integration with your vehicle's electrical system and ATOTO head unit.
10. Warranty and Support
ATOTO stands behind the quality of its products.
- Warranty Period: The ATOTO RCR04W camera comes with a 365-day warranty period.
- Technical Support: ATOTO provides lifetime technical support for its products. If you encounter any issues or have questions, please contact ATOTO customer service.
- Software Updates: ATOTO offers lifetime free firmware, software, user interface, and GPS navigation map updates to ensure your system remains current and performs optimally.

11. Certifications
The ATOTO RCR04W Car Live Rear View Camera complies with international standards and holds the following certifications:
- CE
- FCC
- RoHS






