4CH Dash Cam Backup Camera with 9.36in Quad Split Touch Screen - 4 AHD

In this review the ASLONG 4CH dash cam kit is evaluated for drivers who need a wired, multi-angle camera system for large vehicles. The bottom line is that this kit is well suited to RVs, trucks and trailers that need constant, reliable recording and a 360 view around the vehicle; its biggest selling point is the quad-split 9.36in touchscreen with built-in DVR that records continuously and supports up to a 128GB card. Installation requires a vehicle fuse box with at least 20A, but once powered the system auto starts with ignition and provides looped recording without missing seconds.

Key Features

• Auto power on: The system turns on with vehicle ignition so recording starts automatically and reliably without manual intervention.
• Quad split touchscreen: The 9.36in ISP HD display shows four camera angles simultaneously to remove blind spots while maneuvering large vehicles.
• Built-in DVR: Local playback and seamless loop recording with segmented storage make it easy to find recent footage and avoid a full disk.
• 4 waterproof AHD cameras: Front, rear and two side cameras offer wide 170 degree views and strong night performance for clearer low light images.
• Wired stability: A single power cord for the whole system and wired camera connections avoid wireless dropouts and erratic signal behavior.
• Wide vehicle compatibility: 9-36V DC input supports RVs, semi trucks, buses and other heavy vehicles for flexible installation.

Who It's For

This system is ideal for owners of RVs, trailers, box trucks, school buses and heavy duty campers who need continuous recording and a comprehensive surround view while driving or parking. The rugged cameras and waterproof design suit outdoor mounting and long trips where night vision and wide angles matter.

It is less suitable for drivers who want a plug-and-play phone integration or a compact single-camera recorder for small cars; some buyers report mixed installation experiences and compatibility issues with phones, so casual users seeking an easy smartphone app connection should consider alternatives.

Pros & Cons

Pros

• Reliable auto power-on with ignition for uninterrupted boot recording.
• Clear video quality in daylight and useful night vision from high-definition glass cameras.
• Quad-view monitor with DVR playback and looped recording for convenient evidence capture.
• Wired system avoids signal problems common to wireless setups.

Cons

• Installation requires a fuse box >=20A and some users report that wiring can be challenging.
• Not designed for phone integration, and some customers note compatibility limits with certain devices.

Specifications

Our Verdict

The ASLONG 4CH dash cam kit delivers strong value for large vehicle owners who need a dependable wired multi-camera setup with a clear quad-view touchscreen and built-in DVR. It is especially appealing for RV and truck use where wide voltage support and waterproof cameras matter, but prospective buyers should be prepared for a harder install and limited smartphone compatibility.

Frequently Asked Questions

Does the system record automatically when the vehicle starts?
Yes. The kit auto powers on with ignition and begins boot recording so there are no missing seconds.

What storage size does it support?
The monitor supports a TF card up to 128GB and uses looped segmented storage to prevent a full disk.

Can this be used on heavy trucks and RVs?
Yes. The power input range of 9-36V DC makes it suitable for RVs, semi trucks, trailers and other heavy duty vehicles.