Introduction
This manual provides essential instructions for the proper installation, operation, and maintenance of your IIWEY S1 4K Dual Dash Cam. Please read this manual thoroughly before using the device to ensure optimal performance and safety.
Package Contents
Verify that all items listed below are included in your package:
- IIWEY S1 4K Front Dash Cam
- 1080P Rear Camera
- Car Charger (USB-C power cable)
- GPS Suction Mount
- Adhesive Mounts (with protective films)
- Rear Camera Cable (5.5 meters)
- Cable Clips
- Pry Tool
- SD Card (32GB MicroSD card pre-installed)
- User Manual

Image: The IIWEY S1 4K Dual Dash Cam with its included accessories, including the front camera, rear camera, GPS suction mount, car charger, and SD card.
Setup and Installation
1. Preparing the Dash Cam
- Insert SD Card: The 32GB MicroSD card is pre-installed. Ensure it is properly seated in the slot on the side of the main dash cam unit.
- Initial Power-On: Before permanent installation, connect the main dash cam to the car charger and power it on. This allows for initial configuration and testing.

Image: A close-up view of the IIWEY S1 4K Front Dash Cam, highlighting its compact design and front-facing lens.
2. Mounting the Front Dash Cam
- Clean Windshield: Thoroughly clean the area on your windshield where the dash cam will be mounted.
- Apply Protective Film: Place one of the clear electrostatic films on the cleaned area of the windshield. This protects your windshield from the adhesive.
- Attach Mount: Secure the GPS suction mount or adhesive mount to the protective film. Ensure it is positioned to provide an unobstructed view of the road.
- Attach Dash Cam: Slide the main dash cam unit onto the mounted bracket until it clicks securely into place.
3. Mounting the Rear Camera
- Select Location: Choose a suitable location on your rear windshield for the rear camera, ensuring a clear view.
- Clean Surface: Clean the chosen area thoroughly.
- Attach Rear Camera: Use the provided adhesive to attach the rear camera.
- Route Cable: Carefully route the rear camera cable from the rear camera to the main dash cam unit. Use the pry tool to tuck the cable neatly along the headliner and A-pillars to conceal it. Use cable clips to secure any loose sections.
- Connect Rear Camera: Plug the rear camera cable into the designated "REAR CAMERA" port on the main dash cam unit.

Image: The compact 1080P rear camera unit, designed for discreet mounting on the rear windshield.
4. Power Connection
- Connect Car Charger: Plug the USB-C power cable into the main dash cam unit.
- Plug into Vehicle: Insert the car charger into your vehicle's 12V power outlet (cigarette lighter socket). The dash cam will automatically power on and begin recording when the vehicle starts.
Operating Instructions
1. Basic Operation
- Automatic Recording: The dash cam automatically starts recording when your vehicle's ignition is turned on.
- Power On/Off: The device powers on and off with your vehicle's ignition.
- Touch Screen: Use the 3-inch IPS touch screen for easy navigation and setting adjustments.
2. Video Recording
- Dual Channel Recording: The IIWEY S1 records simultaneously with the front camera at 4K (2160p@30fps) and the rear camera at 1080P@30fps.
- Loop Recording: Videos are recorded in continuous loops (e.g., 1-minute segments). When the SD card is full, the oldest unlocked files will be overwritten.
- Emergency Recording (G-Sensor): In the event of a sudden impact or collision, the built-in G-sensor will automatically detect the event and lock the current video segment to prevent it from being overwritten. The sensitivity of the G-sensor can be adjusted in the settings.
3. Advanced Features
- Super Night Vision: Equipped with a Sony STARVIS sensor (NTK96670 + SONY IMX335 STARVIS), the dash cam provides enhanced clarity and detail in low-light conditions.
- Built-in GPS: The integrated GPS module records driving speed, location (latitude and longitude), and route data. This information can be viewed via the mobile app or PC player.
- Built-in Wi-Fi: Connect your smartphone (Android or iOS) to the dash cam via Wi-Fi using the dedicated app. This allows for live viewing, video playback, and file transfer.
- Parking Monitor: When enabled, the parking mode uses motion and impact detection. If a collision or motion is detected while parked, the dash cam will automatically power on and record.

Image: The IIWEY S1 dash cam displaying its screen, with an overlay showing a smartphone connected via Wi-Fi, illustrating app functionality for live view and video management.

Image: A laptop screen showing GPS tracking data and video playback from the IIWEY S1 dash cam, demonstrating the integrated GPS feature.
Settings and Configuration
Access the settings menu via the touch screen to customize your dash cam's functions:
- Loop Recording: Adjust video segment length (e.g., 1, 3, 5 minutes).
- Gravity Sensing (G-Sensor): Set sensitivity (Low, Middle, High, Off).
- Date Stamp: Enable or disable date and time overlay on videos.
- Recording Audio: Turn audio recording on or off.
- Exposure: Adjust video brightness.
- Screen Saver: Configure screen saver options (e.g., display speed/date, turn off after a set time).
- Date and Time: Manually set or allow GPS to automatically synchronize.
- Time Zone: Set your local time zone.
- GPS Speed Unit: Select MPH or KM/H.
- Wi-Fi: Enable or disable Wi-Fi connectivity.
- Parking Monitor: Enable or disable parking surveillance.
- Format SD Card: Format the MicroSD card to ensure proper function and clear storage.
- Restore Factory Settings: Reset all settings to default.
Maintenance
- Regular Formatting: It is recommended to format the MicroSD card periodically (e.g., once a month) to maintain optimal recording performance and prevent data corruption.
- Clean Lenses: Gently clean the front and rear camera lenses with a soft, lint-free cloth to ensure clear video quality.
- Firmware Updates: Check the manufacturer's website or the mobile app for available firmware updates to ensure your dash cam has the latest features and improvements.
Troubleshooting
- Dash Cam Not Powering On:
- Ensure the car charger is securely plugged into both the dash cam and the vehicle's 12V outlet.
- Check the vehicle's 12V outlet for power.
- Verify the power cable is not damaged.
- Recording Issues:
- Format the MicroSD card.
- Ensure the SD card is a genuine Class 10 or higher speed card.
- Check if loop recording is enabled and functioning correctly.
- Wi-Fi Connection Problems:
- Ensure Wi-Fi is enabled in the dash cam settings.
- Restart both the dash cam and your smartphone.
- Verify you are connecting to the correct Wi-Fi network provided by the dash cam.
- GPS Not Working:
- Ensure the GPS module is properly connected and has a clear view of the sky.
- Check GPS settings in the menu.
- Screen Freezes or App Issues:
- Perform a factory reset via the dash cam settings.
- Ensure the app is updated to the latest version.
Specifications
| Model Number | S1 |
| Front Camera Resolution | 4K (2160p@30fps) |
| Rear Camera Resolution | 1080P@30fps |
| Display | 3.0 inch IPS Touch Screen |
| Image Sensor | Sony STARVIS (NTK96670 + SONY IMX335 STARVIS) |
| Field of View | 170 Degrees |
| Connectivity | Built-in Wi-Fi, Built-in GPS |
| Storage | Supports MicroSD card (32GB included) |
| Power Source | 1 Lithium Polymer battery (included), Car Charger |
| Product Dimensions | 3.15 x 0.59 x 1.89 inches |
| Item Weight | 3.53 ounces |
Warranty and Support
IIWEY provides 18 months of worry-free one-to-one service. For any issues or questions, please contact our customer care center. We aim to respond within 24 hours with helpful advice.
- Support Email: support@iiwey.com
- Warranty Period: 18 Months







