1. Introduction and Overview
The 70mai Dash Cam A500S is a dual-channel dash camera system designed to record both the front and rear views of your vehicle. It features a 2.7K (2592x1944P) front camera with a 140° field of view and a 1080P (1920x1080P) rear camera with a 130° field of view. Equipped with a Sony IMX335 image sensor, WDR (Wide Dynamic Range), and F1.8 aperture, it provides clear recordings even in low-light conditions. Key features include an Advanced Driver Assistance System (ADAS), 24-hour parking monitoring (requires separate hardwire kit), built-in Wi-Fi and GPS, and seamless loop recording.

Image: The 70mai Dash Cam A500S offers dual-channel recording with 2.7K resolution for the front camera and 1080P for the rear camera, capturing wide angles of the road.
2. Setup and Installation
2.1 MicroSD Card Insertion
Insert a compatible MicroSD card (16GB to 128GB, U1 or higher speed class) into the dash cam's slot. Ensure the card is inserted correctly until it clicks into place. The dash cam will automatically format the card upon first use or if a new card is detected.
2.2 Mounting the Front Dash Cam
- Clean the windshield area where the dash cam will be mounted.
- Attach the electrostatic sticker to the windshield, ensuring no air bubbles.
- Mount the dash cam onto the electrostatic sticker, positioning it to ensure a clear view of the road without obstructing the driver's vision. The ideal placement is behind the rearview mirror.
- Connect the power cable to the dash cam and route it along the windshield trim to the car's power outlet.

Image: The compact design of the 70mai Dash Cam A500S allows it to be discreetly mounted behind the rearview mirror, minimizing obstruction to the driver's view.
2.3 Installing the Rear Camera (RC06)
- Connect the rear camera cable to the main dash cam unit.
- Route the rear camera cable along the vehicle's interior trim to the rear windshield.
- Mount the rear camera on the rear windshield, ensuring a clear view of the road behind.
2.4 Power Connection
Connect the car charger to the vehicle's cigarette lighter socket and the dash cam. For 24-hour parking monitoring, the 70mai Hardwire Kit (sold separately) is required to provide continuous power.
2.5 Wi-Fi and App Connection
Download the 70mai app from your smartphone's app store. Turn on the dash cam's Wi-Fi via the device settings. Connect your smartphone to the dash cam's Wi-Fi network. Use the app to view live footage, download recordings, and adjust settings.

Image: The 70mai app allows for easy control and access to recordings via built-in Wi-Fi, while integrated GPS tracks location, speed, and route data.
3. Operating Instructions
3.1 Automatic Recording
Once powered on, the dash cam automatically begins recording. Videos are saved in segments (e.g., 1-minute clips) and stored on the MicroSD card. When the card is full, the oldest recordings will be overwritten by new ones (loop recording).
3.2 Emergency Recording
In the event of a sudden impact or collision, the dash cam's G-sensor will trigger an emergency recording. These recordings are locked and protected from being overwritten by loop recording, ensuring critical footage is preserved.

Image: The dash cam automatically initiates emergency recording upon detecting an impact, securing important video evidence.
3.3 Advanced Driver Assistance System (ADAS)
The A500S features ADAS to enhance driving safety. It provides real-time voice alerts for:
- Lane Departure Warning: Alerts if the vehicle drifts out of its lane.
- Forward Collision Warning: Alerts if the vehicle is too close to the car ahead.
- Front Vehicle Start Alert: Notifies when the vehicle in front starts moving after a stop.

Image: The Smart Driving System (ADAS) provides alerts for potential road hazards like lane departures and forward collisions.
3.4 Parking Monitoring
When the vehicle is parked and the hardwire kit is installed, the dash cam enters parking monitoring mode. It automatically wakes up and records if it detects sudden shakes or collisions. Upon restarting the car, it will provide a voice alert if any parking incidents were recorded.

Image: The 24/7 Parking Monitor feature provides surveillance when your car is stationary, automatically recording incidents. Note: Requires 70mai hardwire kit (sold separately).
3.5 Night Vision
The Sony IMX335 sensor combined with a 6-layer optical lens and F1.8 aperture enhances night vision capabilities, allowing for clear recording of details like license plates and pedestrians in low-light conditions.

Image: Superior Night Vision technology, including WDR, ensures clear recordings in challenging low-light environments.
4. Maintenance
4.1 MicroSD Card Management
Regularly format the MicroSD card (e.g., once a month) through the dash cam's settings or the 70mai app to ensure optimal performance and prevent data corruption. While loop recording overwrites old files, periodic formatting helps maintain card health.

Image: MicroSD card capacity options and estimated recording durations. The A500S supports 16GB-128GB cards.
4.2 Cleaning the Device
Use a soft, dry cloth to clean the dash cam's lens and screen. Avoid using abrasive cleaners or solvents that could damage the device.
4.3 Firmware Updates
Check the 70mai app periodically for available firmware updates. Keeping the firmware updated ensures the best performance and access to new features.
5. Troubleshooting
- Dash Cam Not Powering On: Ensure the power cable is securely connected to both the dash cam and the car's power source. Check the car's power outlet for functionality.
- "Disk Damage Error": This error often occurs if an incompatible MicroSD card is used. Ensure your MicroSD card is between 16GB and 128GB and has a U1 or higher speed rating. Format the card within the dash cam settings.
- Poor Video Quality: Clean the camera lens. Ensure the protective film has been removed from the lens. Check settings in the 70mai app to confirm desired resolution is selected.
- Wi-Fi Connection Issues: Ensure the dash cam's Wi-Fi is enabled. Restart both the dash cam and your smartphone. Try reconnecting through the 70mai app.
- ADAS Not Functioning: Ensure ADAS is enabled in the settings. Calibrate ADAS according to the instructions in the 70mai app for optimal performance.
6. Specifications
| Feature | Specification |
|---|---|
| Model Name | A500S |
| Front Camera Resolution | 2592 x 1944P (2.7K) |
| Rear Camera Resolution | 1920 x 1080P (1080P) |
| Image Sensor | Sony IMX335 |
| Screen Size | 2 Inches IPS LCD |
| Aperture | F1.8 |
| Field of View (Front) | 140° |
| Field of View (Rear) | 130° |
| Connectivity | Wi-Fi |
| Special Features | GPS, ADAS, Parking Monitor, WDR, Night Vision, Loop Recording |
| Supported MicroSD Card | 16GB - 128GB, U1 and above |
7. Warranty and Support
70mai is committed to providing reliable customer care for its products.
- Warranty: 18 Months
- Customer Support: 24 Hours
- Return Policy: 30 Days
For further assistance, please contact 70mai support:
- Email: help@70mai.com
- Phone: 1-877-746-6088 (Monday - Friday, 9 AM - 6 PM PST)





