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
The Rohent R4 Wired 2-Camera rates 3.9 among wired RV backup cameras; the eRapta ACT702 Dual Magnetic Wireless rates 3.7 among wireless ones. The Rohent R4 Wired 2-Camera costs $104 less ($85.99 vs $189.99).
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.
eRapta ACT702 Dual Magnetic Wireless
#8 in WirelessFull review
Two grab-and-stick cameras for hitching and short trailers, not for long RVs.
Amazon $189.99$189.99
Scores side by side
These two sit in different type classes (wired and wireless), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Rohent R4 Wired 2-Camera | eRapta ACT702 Dual Magnetic Wireless |
|---|---|---|
| Overall rating | 3.9/5 | 3.7/5 |
| Value 25% | 100 $42.99 per camera ($85.99, 2 cameras) | 72 $95 per camera ($189.99, 2 cameras) |
| Resolution 20% | 62 1,080p camera | 62 1,080p camera |
| Field of view 10% | 100 170° rear view | 71 150° rear view |
| Monitor 10% | 47 7 in monitor | 47 7 in monitor |
| Expandability 5% | 50 camera limit not published (neutral score used) | 100 takes up to 4 cameras |
| Weatherproofing 10% | 100 IP69K camera | 100 IP69K camera |
| Features 10% | 0 none of the listed features | 35 records to a memory card |
| Signal 5% | 100 wired video link | 3 40 ft on-vehicle range (maker claim) |
| Warranty 5% | 0 1-year warranty | 50 2-year warranty |
Specifications
| Rohent R4 Wired 2-Camera | eRapta ACT702 Dual Magnetic Wireless | |
|---|---|---|
| Cameras | ||
| Cameras included | 2 | 2 |
| Cameras supported | - | 4 |
| Camera resolution | 1,080p | 1,080p |
| Field of view | 170° | 150° |
| Night vision | Infrared | - |
| Waterproof rating | IP69K | IP69K |
| Camera power | Vehicle 12 V | Rechargeable battery |
| Microphone | No | No |
| Monitor | ||
| Size | 7 in | 7 in |
| Touchscreen | No | No |
| Recording | No | Yes |
| Input voltage | 12-24V | - |
| Link | ||
| Link | Wired | Wireless |
| On-vehicle range | - | 40 ft (maker claim) |
| Open-air range (not scored) | - | 328 ft (maker claim) |
| RV prewire fit | No | No |
| Support | ||
| Warranty | 1 year | 2 years |