70mai Rear Camera RC12: Setup Guide and Compatibility Check
By 70mai Official Store | Innovative Dash Cams and Accessories ... | Published: 2026-10-17
Category: How-to Guides
Learn how to install the 70mai RC12 rear camera and verify compatibility with your dash cam model. Step-by-step guide with common mistakes to avoid.
Quick answer
The 70mai RC12 rear camera is compatible with dash cam models A510, A810, A500S, A400, A200, and S500. Installation involves mounting the camera, routing the cable, and enabling the rear channel in the 70mai app. Remember: your dash cam supports only two channels total, so connecting the RC12 means you cannot use an interior camera simultaneously.
What You Need Before Starting
Before you begin, ensure you have the 70mai RC12 rear camera, a micro USB cable (included), a trim removal tool (optional but helpful), and a compatible dash cam. The RC12 works with the 70mai Dash Cam A510, A810, A500S, A400, A200, and S500. If you own a different model, check the product specifications or contact support. Also note that the dash cam supports only two channels: if you connect the RC12, you cannot connect an interior camera at the same time.
The RC12 offers a 130° wide viewing angle, which captures more detail on the road behind you. However, it does not record in 4K — the front camera handles that. The rear footage is 1080p, which is sufficient for license plate reading and incident documentation. If you need 4K rear recording, consider a dual-channel dash cam like the A810 that supports HDR on both channels.
Step-by-Step Installation Process
Mount the RC12 on your rear windshield. Clean the glass area with an alcohol wipe, peel the adhesive backing, and press firmly for 30 seconds. Position the camera so it has a clear view of the road behind you, typically near the top center of the rear window. Avoid areas with defroster lines or tinting film that might interfere with the adhesive or image quality.
Route the cable from the rear camera to your dash cam. Tuck the cable along the headliner, down the A-pillar, and under the dashboard. Use the trim removal tool to gently pry the trim pieces and hide the cable. A common mistake is leaving slack near the door hinge — this can pinch the cable or cause rattles. Secure the cable with clips if needed.
Connecting and Configuring in the App
Plug the RC12 cable into the rear camera port on your dash cam. The port is usually labeled 'REAR' or 'CAM 2'. Power on the dash cam and open the 70mai app. Navigate to the camera settings and select 'Rear Camera' or 'Channel 2'. If the image appears upside down, use the 'Flip' option in the app. If no image appears, check the cable connection and ensure the dash cam firmware is up to date.
One common mistake is forgetting to enable the rear channel in the app — the dash cam may default to front-only recording. Also, if you previously had an interior camera connected, you must disconnect it and reconfigure the channel. The dash cam will not automatically switch; you need to manually select the rear camera as the second channel.
Installation Steps
- Check compatibility: Verify your dash cam model is A510, A810, A500S, A400, A200, or S500. The RC12 will not work with other models. Also confirm you are not using an interior camera, as the dash cam supports only two channels total. Common mistake: assuming any rear camera works with any dash cam. Always check the model list before purchasing.
- Mount the rear camera: Clean the rear windshield area with an alcohol wipe. Peel the adhesive backing and press the RC12 mount firmly for 30 seconds. Position it near the top center for the best rear view. Checkpoint: ensure the camera is level and has a clear view. Avoid defroster lines or tinting film that may block the lens.
- Route the cable: Run the micro USB cable along the headliner, down the A-pillar, and under the dashboard. Use a trim removal tool to tuck the cable and avoid pinching near door hinges. Common mistake: leaving slack near the door hinge. This can pinch the cable or cause rattles. Secure the cable with clips if needed.
- Connect and configure: Plug the cable into the rear camera port on your dash cam. Power on the dash cam and open the 70mai app. Go to camera settings and select 'Rear Camera' or 'Channel 2'. Flip the image if upside down. Checkpoint: if no image appears, check the cable connection and ensure the dash cam firmware is up to date. Also verify you have enabled the rear channel in the app.
- Test recording: Take a short drive and review the footage in the app or on the dash cam screen. Confirm the rear camera is recording and the image is clear. Adjust the camera angle if necessary. Final step: if the footage is blurry or the angle is off, reposition the camera. The 130° wide angle should capture both lanes behind you.
Product Details
- 70mai Rear Camera RC12 for Dash Cam A510/ A810/ A500S/ A400/ A200/ S500: Compatible with the 70mai Dash Cam A510/ A810/ A500S/ A400/ A200/ S500 for rear or interior recording, providing you with a comprehensive view of your surroundings. With a wide viewing angle of 130°, you can capture more detail in your… The 130° wide angle ensures you capture lanes beside you and vehicles approaching from the rear, reducing blind spots. However, the wide field of view may distort objects at the edges slightly, which is typical for such lenses.
