REXING / PRODUCT SUPPORT

RH2-4.
Set up.
Stay covered.

Get your RH2-4 recording, connect Rexing Connect and find the right guide for playback and parking monitoring.

RH2-4Rexing ConnectUp to 512GB microSD

Quick startMount & record App & playbackConnect and review Parking setupPower requirements ResourcesManual & help

01 / QUICK START

Ready for the first drive.

Follow the illustrated installation section in this version’s RH2-4 user manual.

Insert a suitable card

Use a dash-cam-rated microSD card, Class 10 / UHS-I or higher, up to 512GB. Power the camera off before inserting or removing the card. Back up recordings before formatting.

Choose and secure your mount

Clean and dry the windshield. The guide covers the 3M adhesive mount and electrostatic sticker. Position the camera behind the rear-view mirror without blocking your view. Follow the drying and mounting instructions for your chosen mount.

Connect vehicle power

Plug the supplied car charger into a 12V DC accessory outlet and connect it to the camera. The camera starts recording when it receives power. Press and hold Power to turn it on manually.

Check your version: Use the RH2-4 guide linked here. Match the label on your camera before following firmware or accessory instructions.

Connect the additional cameras: use the provided cables and follow the RH2-4 diagram. Match each camera cable to the labeled left, right or rear port in the guide. The package list includes a waterproof rear camera; accessory availability can vary by bundle, so check your actual package before installation.

02 / APP & PLAYBACK

Connect nearby.
Review your recordings.

Use Rexing Connect for the phone connection described in the RH2-4 manual.

Rexing app downloads →

Enable camera Wi-Fi

With the camera powered on, hold the OK navigation button to enable Wi-Fi. The camera displays its Wi-Fi name and password. Use the details shown on your own camera.

Connect your phone

Open your phone’s Wi-Fi settings and join the camera’s network. Enter the displayed password, then open Rexing Connect. The manual notes that some phones may need another connection attempt.

Play footage on the camera

Hold MENU and toggle to Playback Mode. Use the UP and DOWN buttons to choose a video, then press OK to play or pause. During playback, UP rewinds and DOWN fast-forwards.

Review footage on a computer

Turn the camera off before removing the card. Insert it into an SD-card adapter or compatible card reader, then access the recordings on your computer. Keep a separate copy of important clips.

GPS is optional: the guide lists a Rexing Charger with GPS Logger (UPC 810046606872), or Type-C GPS Smart Hardwire Kit (UPC 810046606865), sold separately. With a compatible GPS accessory activated, speed and location are recorded. Find GPS Speed Unit in System Settings and use compatible GPS playback software to review the data.

Format a new memory card: back up any clips you need first. Insert the card with power off, turn the camera on, press UP to stop recording, then press MENU twice for Setup Settings. Use UP and DOWN to select Format and press OK to confirm. Formatting deletes all card contents.

Change settings: if the camera is recording, press UP to stop recording first, press MENU once for Video Settings or twice for Setup Settings.

03 / PARKING MONITOR

Set up the power first.

Parking monitoring requires a compatible Smart Hardwire Kit. It supplies power after the engine is off and helps protect the vehicle battery.

Vibration detection setup

The RH2-4 guide specifies a Smart Hardwire Kit, sold separately, UPC 810046607497. Confirm compatibility before installation and follow the exact kit instructions.

Understand impact detection

The Gravity Sensing function detects significant or sudden movement and triggers an event recording. The guide suggests High sensitivity for parking recording; use the setting appropriate to your installation.

Do not enable Parking Monitor without the smart hardwire kit

The manual explicitly warns that enabling Parking Monitor without this connection may cause a malfunction. With the smart hardwire kit installed correctly, the camera can switch to parking mode when the engine turns off and return to normal recording when it turns on.

Motion detection uses a different kit: The guide specifies a Rexing Intelligent Hardwire Kit (sold separately). Keep the camera’s Parking Mode setting turned off for this setup. The kit powers on the camera when motion is detected and recording continues until motion clears. Follow the exact kit instructions.

Too many locked videos? The guide recommends Low Gravity Sensing sensitivity when you do not use parking mode. Locked clips are not deleted by loop recording and can fill the card. Save important files before deleting clips or formatting.

04 / TROUBLESHOOTING

A clearer next step.

Use the RH2-4 guide for RH2-4. Settings and package contents may differ between versions.

Which memory card does this version support?

A Class 10 / UHS-I or higher microSD card up to 512GB. Choose a card designed for continuous dash-cam recording and insert or remove it only with power off.

Why can’t I change menu settings?

Press UP to stop an active recording, press MENU once for Video Settings or twice for Setup Settings. Resume recording after you finish.

My phone cannot connect to the camera. What should I check?

Power the camera on, hold OK to enable Wi-Fi and confirm the network name and password on-screen. Join that network in the phone’s Wi-Fi settings before opening Rexing Connect. Some phones may need more than one connection attempt.

Why is my memory card filling up?

Locked event clips are not removed by loop recording. Check your Gravity Sensing sensitivity and back up important recordings. The guide recommends Low sensitivity when you do not use parking mode.

Can I use parking mode with only the car charger?

The guide requires a compatible Smart Hardwire Kit for Parking Monitor. Do not enable that setting without the smart hardwire connection.

Where should I look for firmware?

Use Rexing’s official firmware tool and match the exact model and version. Avoid installing firmware intended for another camera. Contact support if you cannot confirm the correct file.

05 / RESOURCES

The right guide for your RH2-4.

RH2-4 manualOfficial version-specific PDF ↗Official firmware toolCheck your exact model & version ↗Rexing app downloadsFind Rexing Connect →

Still need a hand?

Tell us it is the RH2-4 version and share the issue and firmware version.

Contact Rexing

Model reference: Rexing RH2-4 support page and its linked quick start guide. Package contents and accessory availability depend on the version purchased.

RH2-4.Set up.Stay covered.