M2-4CH - Dash cam Rexing - Free user manual and instructions

Product Type	Dash Cam
Brand	Rexing
Model	M2-4CH
Channels	4 (Front, Rear, Interior, Side)
Front Video Resolution	4K (3840x2160) at 30fps
Rear/Interior/Side Video Resolution	1080p (1920x1080) at 30fps
Display	3.19-inch IPS touchscreen
GPS	Built-in GPS for speed and location tracking
Wi-Fi	Built-in Wi-Fi for app connectivity
Parking Mode	Yes (motion detection and time-lapse)
G-Sensor	Yes (collision detection and auto-lock)
Night Vision	Infrared LEDs for interior camera
Storage	Supports microSD up to 256GB (Class 10 or U3)
Power Supply	12V/24V DC (cigarette lighter or hardwire kit)
Dimensions (Front Camera)	Approx. 4.5 x 3.5 x 1.5 inches
Weight	Approx. 1.5 lbs (entire system)
Audio	Built-in microphone and speaker
Camera Angle	Front: 170°, Rear: 150°, Interior: 170°, Side: 150°
Operating Temperature	-20°C to 65°C (-4°F to 149°F)
Warranty	1 year limited warranty
Material	ABS plastic
Mount	Suction cup or adhesive mount included

Frequently Asked Questions - M2-4CH Rexing

How do I install the Rexing M2-4CH dash cam?

Installation involves mounting the front camera to the windshield, running cables discreetly to connect rear, interior, and side cameras. Use the provided suction cup or adhesive mount. Connect the power to the cigarette lighter or hardwire kit. Detailed steps are in the manual.

What memory card is recommended for the M2-4CH?

A high endurance microSD card with Class 10 or U3 speed rating, up to 256GB, is recommended. Brands like Samsung or SanDisk work reliably.

How do I enable parking mode?

Parking mode requires hardwiring the dash cam to your vehicle's fuse box. Once connected, enable parking mode in the settings. The camera will record when motion or impact is detected.

How do I view or download footage from the M2-4CH?

You can view footage directly on the camera's screen, or remove the microSD card and use a computer. Alternatively, connect via the Rexing Connect app over Wi-Fi to view and download clips.

Does the M2-4CH support GPS?

Yes, it has built-in GPS that records your speed, location, and route. This data can be viewed in playback software or the app.

How do I update the firmware?

Download the latest firmware from the Rexing support website. Copy the firmware file to the root of a formatted microSD card, insert it into the camera, and power on. The update will start automatically.

Can I use the dash cam while parked?

Yes, with parking mode enabled and proper hardwiring, the M2-4CH can record continuously or triggered by motion/impact. Make sure your car battery can support it.

What is the warranty period for the Rexing M2-4CH?

The Rexing M2-4CH comes with a 1-year limited warranty covering defects in materials and workmanship. Register your product for support.

How do I reset the dash cam to factory settings?

Go to Settings > Factory Reset and confirm. Alternatively, use the reset pin hole (if available) by inserting a paperclip while the camera is on.

What are the camera angles for each channel?

The front camera has a 170° angle, rear 150°, interior 170°, and side camera 150°. This provides comprehensive coverage around your vehicle.

USER MANUAL M2-4CH Rexing

The information in this manual is subject to change without notice.

www.rexingusa.com

REV012024

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Table of Contents

Overview 3

What's in the Box 4

Camera Overview 5

Screen Icons 6

Memory Card Installation. - - . 7

Insert a Memory Card . . . . . . 7

Formatting a Memory Card 8

Installation 10

Dash Cam Installation 10

GPS Logger 14

GPS Date-Time Troubleshooting. 14

Video Playback 15

Basic Operations 16

Resolution 16

Loop Recording. 16

G-sensor 17

Parking Monitor (Parking

Surveillance Mode) 18

Gravity Sensing Record - - - - . 18

Screen Saver 20

Volume 20

Language 20

Date and Time 21

Light Frequency 21

Recording Audio 21

Beep Sound 21

Channel Setting 22

Reset 22

FW Version 22

Warranty and Support 23

Overview

Thank you for choosing REXING!

We hope you love your new products as much as we do. If you need assistance, or have any suggestions to improve it, please contact us.

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[phone]

Our support team will respond to you as soon as possible.

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Product Support

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What's in the Box

1. Rexing M2-4CH smart mirror dash cam
2. Rear camera
3. In-car power cable (12ft)
4. GPS Logger

5. Side/Rear Camera HUB

6. Cable management tool

7. User manual
8. Side Camera (2 PCs)
9. Warning Sticker

Camera Overview

Note

• Please always connect to the power cord to turn on the dash cam
• Press the Power Button to turn On or Off the screen
• Press and hold the Power Button for 3 seconds to turn the device on or off

Screen Icons

1. Start/Stop Recording
2. Mic on/off
3. Lock/Unlock Current Video
4. Take Photo
5. Screen View Switch
6. Playback
7. Screen Brightness
8. Settings

9. Video Clip Length

10. Resolution

11. Recording Indicator
12. Mic Status
13. Lock Status
14. Speaker Status
15. GPS Status
16. MicroSD Status
17. Date Time

Note

• If the screen is off, tap the screen to turn it back on.
- If the icons on the screen are hidden, tap the screen to display the icons.
- Scroll left or right on the screen to switch the view among Front, Rear, Cabin, and All.
- Scroll up or down to adjust the visual range of each camera.

Memory Card Installation

Step 1. Insert a Memory Card

You will need to insert a memory card before beginning recording. Push the memory card into the slot until it locks in place.

The M2-4CH dash cam accepts memory cards with a maximum capacity of 256GB. Depending on the memory card's manufacturer and type, some cards may not be compatible with the dash cam. Using an incompatible card may damage the device, the memory card, or corrupt the data stored on it. For reliable operation, use a Class 10 memory card with a capacity of at least 32GB.

Technical line drawing of a mechanical component with no visible text or symbols

Note

• DO NOT insert or remove a memory card while the device is in operation.
- It is recommended that you reformat the memory card every time images are transferred to the computer, or at least once a month.
- Reformatting a memory card keeps important elements of data and also a cleaned file structure which helps to prevent error messages and missing images. Reformatting also restores the memory card, which can help prevent it from becoming corrupted.

Step 2. Formatting the Memory Card

1. Tap the icon to stop recording
2. Tap the icon to access settings
3. Tap General Settings
4. Toggle down to Format
5. Tap OK to format the card

Please format the card on the dash cam before using it. Before formatting a memory card, always remember to make backup copies of all important data stored on the device. The manufacturer's warranty does not cover loss of data resulting from user actions.

Note

Removing the memory card

Before removing a memory card from your dash cam, you must first unmount it for safe removal.

1. Tap the ■ icon to stop recording
2. Press and hold the power button to turn off the device
3. Gently push the memory card in and let go until it releases

Do not remove the memory card while the device is transferring or accessing information. Doing so can result in data loss, corruption, or damage to the memory card or device. Rexing is not responsible for losses that result from the use of damaged memory cards, including the loss of data.

Installation

Dash Cam Installation

1. Strap the dash cam to the rearview mirror of your vehicle with the rubber mounting strap. Adjust the angle of the cameras to ensure that it captures your desired view.
2. Mount the side and rear camera as shown below and then connect the rear camera and side camera to the HUB and connect to the main unit. Carefully route the power cable around the door and tuck in under the trim.

The rearview camera has two wire routing options as shown in the above figure. The first part of both options is characterized with concealing the wire routing against the edges of the door(s).

The device is configured with a streaming media rearview camera that provides clear traffic view behind the car. To obtain clearer and more intuitive images, it is recommended to mount the camera above the license plate (as shown by option B).

1. The device will be automatically be powered on when plugged into a 12V accessory socket or cigarette lighter and received a charge (i.e.: the vehicle is started). To turn the device on manually, press and hold the Power button for 3 seconds until the welcome screen appears. The dash cam will automatically start recording when powered on.

2. The red wire of the rear camera cable provides a 12 Volt power to your rear camera. It is not necessary to connect the red wire to the power supply. But if you want to use the parking assist function, it's recommended to connect to the power source of your reverse lights, so the screen will display the image of the rear camera automatically when the vehicle is in reverse. If you need more installation information, please reach out to [e-mail] for assistance.

Note

The optional rearview camera is mounted on the rear of the car. Pay attention to its orientation during installation. Plug the rearview camera connector into the corresponding port of the dashcam once the installation is completed. Adjust the position of the lens to ensure that it aligns horizontal with the ground. Start the engine to check the video functionality of the device.

1. Plug the GPS module into the GPS port and secure the module to a position close to A-pillar of the car. The antenna receiver side (the side without 3M adhesive) faces the outside and the side with 3M adhesive faces down. It should be properly secured.

1. When connecting the charger to the vehicle's 12V DC outlet, be sure to use only a Rexing-approved charger. The charger should be at least a 2.5A charger which is designed and supplied specifically for use with your device. Using an incompatible charger can cause serious personal injury or damage to your device.

Technical line drawing of a rearview mirror with cable and connector (no text or symbols)

Note

Due to unstable voltages caused by starting the car engine, a voltage fluctuation in some vehicles may be especially obvious. If a flashing screen or some other unforeseeable operating problem occurs when you start the engine, it is recommended to unplug the device from the charger before starting the engine, and then reconnect it after the engine is running.

Note

• Press the Power Button to turn On or Off the screen
• Press and hold the Power Button for 3 seconds to turn the device on or off

We kindly suggest taking a moment to watch our tutorial video. It's designed to help you have a smooth and successful installation experience. We believe you'll find it very helpful!

Please scan QR code

or go to

shop.rexingusa.com >

Buyer's Guide >

How to Install a Dash Cam

GPS Logger

You can then access this information while playing back your recordings using the GPS Video player (For Windows and Mac, available at rexingusa.com)

The dash cam will automatically search for the GPS signal once it's connected to the power source. Press the HOME button and go to System Settings. Toggle the GPS Speed Unit setting, and select your favorite speed unit.

After a GPS signal is found, the screen icon will turn from Gray to green as per the below icons. It will record the speed and location of your vehicle as you drive.

GPS Signal Searching

GPS Signal Active

GPS Date-Time Troubleshooting

If your dash cam GPS data and time are incorrect please to

https://www.rexingusa.com/gps-data-time/

OR scan the QR code below.

Download GPS Video player

Please download GPS logger player through the link OR Scan the QR Code below.

Video Playback

To playback a video on the device, press the 📄 icon on the home screen and select a desired file to play.

To playback a video on the computer, either use an SD card adapter or connect the device to the computer directly using the included USB cable. To playback a video using an SD card adapter, remove the memory card and insert it into an SD card adapter. Place the adapter in the computer.

The videos are stored at: \Video. Select the video to playback.

Basic Operations

Resolution

The dash cam can record videos in two, three, or four channels. The video resolution taken by each camera is FHD 1920x1080P.

Loop Recording

With Loop Recording Mode enabled, the device will continuously erase the older video as it records a new video, keeping only the footage captured over a user-selected time range. All video older than this range will be replaced with new video.

Note

Any locked video files on the memory card will remain protected, and will not be automatically deleted during Loop Recording.

1. Tap the icon to stop recording
2. Tap the 📄 icon to access settings
3. Tap the Video Settings Button
4. Toggle to Loop Recording and select your preferred time interval (we recommend 1 minute).
5. Tap the √ icon to exit

G-sensor

If a change in gravitational forces is detected, such as in the event of a vehicular accident, the g-sensor will signal to the camera, and an automatic locked file will be placed on the current video, preserving your most crucial footage. Locked videos can be found on the memory card under “\event”.

Note

Locked video files won't be erased by Loop Recording, they will remain on the memory card until they are manually deleted, or when the card is formatted.

1. Tap the icon to stop recording
2. Tap the icon to access settings
3. Tap the Video Settings Button
4. Toggle to G-sensor and choose your desired sensitivity
5. Tap the √ icon to exit

Parking Monitor (Parking Surveillance Mode)

Parking monitor provides surveillance on your parked vehicle.

Option 1: Vibration Detection

Please select your preferred mode from the camera settings, it will allow the dash cam to switch to parking mode automatically if the vehicle's engine turns off and switch back to the normal recording after vehicle's engine turns on.

Note

Rexing Dash Cam Smart Hardwire Kit, Type-C Hard Wire Kit Needed.

Gravity Sensing Record

The Gravity Sensing detects significant or sudden movement (such as an impact or collision), it will trigger an event recording. We suggest setting the “Gravity Sensing” to High sensitivity for Parking Mode Recording.

Note

If you do not use the parking mode function, please change G-sensor setting to low sensitivity. Otherwise, the dash cam will easily lock the video and it cannot be deleted by the loop recording function. This will cause the memory card to be full of locked videos and cause the recorder to fail to work normally.

Note

Installing the provided hardwire kit is optional, but it can enhance your dash cam experience. The kit has a single cable for fuse connection, and the dash cam's behavior depends on your connection choice:

1. Constant Fuse: Keeps the dash cam on even when the car is off, but disables the parking monitor.
2. On/Off Fuse: Activates parking monitor when parked and frees up your cigarette lighter. Parking recordings are saved in the locked video folders.

Choose the setup that best suits your needs.

We kindly suggest taking a moment to watch our tutorial video. It's designed to help you have a smooth and successful installation experience. We believe you'll find it very helpful!

Please go to

https://www.rexingusa.com/ihwkinstall

or scan QR code

Option 2: Motion Detection

To use this feature, you need to connect it with a Rexing Intelligent Hardwire Kit Type-C Port (available on rexingusa.com, sold separately). Make sure that the Parking Mode is turned off on your dash cam, otherwise it may cause a malfunction.

Once the sensor had detected MOTIONS. The intelligent hardwire kit will power up the dash cam automatically and start recording until the MOTION is cleared.

Screen Saver

Select a time duration for the screen to stay on after recording starts.

Volume

Use this option to adjust the volume of the device's sound.

Language

Use this option to select a display language.

Date and Time

Use the following procedure to change the device's time and date.

1. Tap the icon to stop recording
2. Tap the icon to access settings
3. Choice Year, Month, Day, Hour, Minute, Second
4. Tap the to save √ and ✗ to exit

Light Frequency

This option should be set according to the power supply specification used in your country or geographical region (U.S. users should select the "60Hz" option).

Recording Audio

You may choose to record audio with video, or turn off the microphone so that all recorded videos will be muted. The microphone may also be turned on/off by tapping the 🎨 icon on the home screen.

Key Sound

Allows you to turn the device's button sound effect on or off.

Channel Setting

To Flip/Mirror each channel.

Reset

Performing this operation will reset all of your device's settings to their original values.

Note

Any user-customized settings will be lost.

FW Version

View the current device firmware information.

Warranty & Support

Warranty

The Rexing M2-4CH dash cam comes with a full 12-month warranty. If you register your product on our official site

(https://www.rexingusa.com/support/registration), you can extend the warranty to 18 months.

Support

If you have any questions regarding your product, please do not hesitate to contact us at [e-mail], or call us at [phone]. Queries are typically answered within 12-24 hours.

Your opinion matters

Rexing is firmly committed to always improving our products, services, and user experience. If you have any thoughts on how we can do even better, we welcome your constructive feedback and suggestions.

Connect with us today at [e-mail]

Thank you for choosing Rexing!

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.

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