eRapta A9 Wired 9-inch 4-Camera
#2 in WiredFull review
A full wired four-camera system for large RVs and trucks that want every view at once with no wireless lag.
Amazon $339.99$339.99
The eRapta A9 Wired 9-inch 4-Camera and the Rohent R4 Wired 2-Camera are evenly matched, rated 4.0 and 3.9. The eRapta A9 Wired 9-inch 4-Camera leads on monitor, features and warranty. The Rohent R4 Wired 2-Camera wins on value. The Rohent R4 Wired 2-Camera costs $254 less ($85.99 vs $339.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Rohent R4 Wired 2-Camera
#3 in WiredFull review
A cheap wired rear-and-side pair for trucks, tractors and short trailers.
Amazon $85.99$85.99
Which should you buy?
- Choose the eRapta A9 Wired 9-inch 4-Camera for monitor (9 in monitor vs 7 in monitor), features (records to a memory card vs none of the listed features) and warranty (2-year warranty vs 1-year warranty).
- Choose the Rohent R4 Wired 2-Camera for value ($42.99 per camera ($85.99, 2 cameras) vs $85 per camera ($339.99, 4 cameras)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every wired RV backup camera; a clear win is highlighted. How we rank explains each one.
| Factor weight | eRapta A9 Wired 9-inch 4-Camera | Rohent R4 Wired 2-Camera |
|---|---|---|
| Overall rating | 4.0/5 | 3.9/5 |
| Value 25% | 77 $85 per camera ($339.99, 4 cameras) | 100 $42.99 per camera ($85.99, 2 cameras) |
| Resolution 20% | 62 1,080p camera | 62 1,080p camera |
| Field of view 10% | 50 field of view not published (neutral score used) | 100 170° rear view |
| Monitor 10% | 82 9 in monitor | 47 7 in monitor |
| Expandability 5% | 100 takes up to 4 cameras | 50 camera limit not published (neutral score used) |
| Weatherproofing 10% | 100 IP69K camera | 100 IP69K camera |
| Features 10% | 35 records to a memory card | 0 none of the listed features |
| Signal 5% | 100 wired video link | 100 wired video link |
| Warranty 5% | 50 2-year warranty | 0 1-year warranty |
Specifications
| eRapta A9 Wired 9-inch 4-Camera | Rohent R4 Wired 2-Camera | |
|---|---|---|
| Cameras | ||
| Cameras included | 4 | 2 |
| Cameras supported | 4 | - |
| Camera resolution | 1,080p | 1,080p |
| Field of view | - | 170° |
| Night vision | Infrared | Infrared |
| Waterproof rating | IP69K | IP69K |
| Camera power | Vehicle 12 V | Vehicle 12 V |
| Microphone | No | No |
| Monitor | ||
| Size | 9 in | 7 in |
| Resolution | 1920x1080 | - |
| Touchscreen | No | No |
| Recording | Yes | No |
| Input voltage | 12-24V | 12-24V |
| Link | ||
| Link | Wired | Wired |
| RV prewire fit | No | No |
| Support | ||
| Warranty | 2 years | 1 year |