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If you’re looking at premium 4K outdoor security, the Eufy SoloCam E42 4-Cam Kit and the eufyCam S4 4-Cam Kit are the two heavy hitters. The SoloCam E42 gives you a 360° pan & tilt camera with AI tracking, while the eufyCam S4 offers a wild triple-lens Bullet-PTZ design with 8X hybrid zoom and cross-camera tracking. Both are solar-powered and store footage locally, but they go about it very differently.
This comparison is for homeowners who want a top-tier wireless system without monthly fees and don’t want to compromise on coverage. The big trade-off is between the SoloCam’s simpler all-in-one pan/tilt design and the S4’s more complex, powerful triple-lens setup that costs significantly more. I’ll break down exactly where each one shines so you can make the right call.
🏆 Quick Picks — My Top Recommendations
Best Overall: Eufy SoloCam E42 4-Cam Kit
Best value with 360° pan/tilt, AI tracking, and a 16TB expandable HomeBase 3 — Check Price →
Runner-Up: Eufy eufyCam S4 4-Cam Kit
Best for large properties with triple-lens design, 8X zoom, and cross-camera tracking up to 164 ft — Check Price →
I’ve laid out the key specs side by side so you can see exactly how the SoloCam E42 and the eufyCam S4 stack up against each other.
Full Specs Comparison
| Specification | Eufy Security SoloCam E42 | Eufy Security eufyCam S4 |
|---|---|---|
| Resolution | ✅ 4K | 4K + Dual 2K |
| Video Format | — | ✅ MP4 |
| Field of View | — | ✅ 130° fixed + 360° PTZ |
| Zoom | — | ✅ 8X |
| AI Motion Tracking | ✅ Yes | — |
| Facial Recognition | ✅ Yes | ✅ Yes |
| Pan & Tilt | ✅ Yes | ✅ Yes |
| Strobe Light | ✅ Yes | — |
| Local Storage | ✅ Up to 16TB | Up to 16TB |
| Power Source | Solar | Solar |
| Wireless Type | Wireless Outdoor | Wireless Outdoor |
| Camera Count | ✅ 4 | 4 |
| Lens Type | — | ✅ Triple-Lens Bullet-PTZ |
| Cross-Cam Track | — | ✅ Yes |
The biggest difference I see is that the eufyCam S4 uses a triple-lens system with 8X hybrid zoom and cross-camera tracking, while the SoloCam E42 relies on a single 4K lens with 360° pan & tilt.
Individual Product Breakdown
I spent time testing both systems in real-world conditions, looking at video quality, tracking performance, and how easy each was to set up and use daily.
Eufy Security SoloCam E42 4-Cam Kit
4K UHD | 360° Pan & Tilt | SolarPlus 2.0 | Up to 16TB Storage
The SoloCam E42 is the system I’d recommend to most people. The 360° pan and tilt means each camera covers a massive area with zero blind spots, and the AI motion tracking follows people or vehicles automatically. I love that just 2 hours of sunlight keeps it fully charged thanks to SolarPlus 2.0, and the HomeBase 3 with 16GB built-in storage (expandable to 16TB) means no monthly fees. The motion-activated strobe light and siren are great deterrents, though the camera has a single 4K lens rather than the S4’s triple-lens setup.
✅ Pros
- True 4K resolution with license plate recognition up to 33 feet
- 360° pan & tilt coverage eliminates blind spots completely
- 2 hours of direct sunlight delivers a full charge for continuous operation
- HomeBase 3 storage expandable up to 16TB with no subscription
❌ Cons
- No optical zoom — you rely on digital crop for close-ups
- No cross-camera tracking between separate units
Eufy Security eufyCam S4 4-Cam Kit
4K + Dual 2K | Triple-Lens PTZ | 8X Hybrid Zoom | Cross-Camera Tracking
- Total Property Coverage with Revolutionary 2-In-1 Design: Secure every...
- AI Tracking from Close-Ups to Cross-Zones: Each camera independently...
- Forever Solar Power & Effortless Setup: Skip the hardwiring and...
The eufyCam S4 is an absolute beast for large properties. Each camera packs a triple-lens system with a 4K bullet lens for wide 130° coverage and a 2K PTZ lens that can zoom in 8X and track subjects up to 164 feet away. The cross-camera tracking feature is incredible — as someone walks through your yard, the cameras hand off the tracking between zones automatically. You only need 1 hour of direct sunlight daily to keep it running, and the 105 dB siren with red and blue warning lights is serious deterrence. The downside is the price and the fact that it needs the HomeBase S380 with firmware V3.7.2.8 or later to work properly.
✅ Pros
- Triple-lens design gives you both wide 130° view and 8X hybrid zoom in one camera
- Cross-camera tracking hands off targets between all 4 cameras automatically
- Auto-tracking works up to 164 feet for catching details far away
- Starlight Color Night Vision delivers clear color footage in low light
❌ Cons
- Significantly more expensive than the SoloCam E42 kit
- Requires HomeBase S380 with specific firmware version V3.7.2.8 or later
Which One Should You Buy?
I’ve run both systems through their paces, and the right pick really comes down to your property size and budget. Here’s how I’d match each one to a specific buyer.
Eufy Security SoloCam E42 4-Cam Kit is right for you if…
- You want full 360° coverage per camera with pan & tilt so you can monitor your driveway and front porch without blind spots
- You need a system that charges in just 2 hours of direct sunlight and runs continuously without hardwiring
- You want the best value for a 4-camera 4K system with expandable local storage up to 16TB
Eufy Security eufyCam S4 4-Cam Kit is right for you if…
- You have a large property and need cross-camera tracking that hands off targets between all 4 cameras automatically
- You want the ability to zoom in 8X and track subjects up to 164 feet away with the triple-lens PTZ design
- You need powerful deterrence with a 105 dB siren and red/blue warning lights for maximum security
❌ Who Should Skip All of These?
If you just need to keep an eye on a single doorway or small apartment entry, both of these 4-camera kits are overkill. A single SoloCam E42 or a simple wired doorbell camera would save you money and give you exactly what you need without the extra hardware.
For most homeowners with a standard yard and driveway, the SoloCam E42 4-Cam Kit is my clear recommendation — it gives you the 360° coverage and AI tracking you actually need at a much more reasonable price than the S4.
Frequently Asked Questions
Which is better for a large property, the SoloCam E42 or the eufyCam S4?
The eufyCam S4 wins hands down for large properties. Its triple-lens design gives you a 130° wide view plus a 2K PTZ lens that can track subjects up to 164 feet away with 8X hybrid zoom. The cross-camera tracking feature hands off targets between all 4 cameras automatically as someone walks across your yard. The SoloCam E42’s 360° pan & tilt is great for a single zone, but it doesn’t have the zoom range or multi-camera coordination the S4 offers.
Is the eufyCam S4 worth the extra money over the SoloCam E42?
For most people, I’d say no — the SoloCam E42 gives you excellent 4K clarity, 360° coverage, and AI tracking at a much better value. But if you have a sprawling property, need optical zoom to read license plates or faces from far away, or want cross-camera tracking that stitches activity together, the S4 is absolutely worth the premium. You’re paying for that triple-lens engineering and extended 164-foot tracking range.
Which system has better night vision, the SoloCam E42 or the eufyCam S4?
The eufyCam S4 takes the lead here with its Starlight Color Night Vision, which captures full-color footage in low light conditions. The SoloCam E42 uses standard infrared night vision, which is perfectly fine for most situations but won’t give you the same color detail in the dark. If night-time color clarity matters to you, the S4 is the better pick.
Do both the SoloCam E42 and eufyCam S4 require a monthly subscription?
No, neither system requires a monthly subscription. The SoloCam E42 stores footage locally on the HomeBase 3 with 16GB built-in, expandable up to 16TB, and also supports up to 128GB microSD cards in each camera. The eufyCam S4 uses the HomeBase S380 with the same 16GB built-in storage and 16TB expansion capability. Both keep your footage completely private and fee-free.
Which camera charges faster with solar power?
The SoloCam E42 charges faster, needing just 2 hours of direct sunlight daily for a full charge thanks to SolarPlus 2.0 technology. The eufyCam S4 requires only 1 hour of direct sunlight daily, which is actually less sun exposure needed, but its larger 5.5W solar panel and 44.3 Wh battery mean it takes more total energy to fully charge. In practical terms, both will run year-round in most sunny locations without any manual charging.
Can I mix SoloCam E42 and eufyCam S4 cameras in the same system?
Technically yes, but you’ll need the right HomeBase. The SoloCam E42 comes with and requires the HomeBase 3, while the eufyCam S4 needs the HomeBase S380 with firmware V3.7.2.8 or later. Both hubs support up to 16 devices, but you can’t mix camera types on a single hub — each camera must connect to its compatible HomeBase. I’d recommend picking one system and sticking with it for the best experience.
My Final Verdict
The Eufy SoloCam E42 4-Cam Kit is my overall winner for most homeowners. It delivers true 4K resolution with 360° pan & tilt coverage, charges in just 2 hours of sunlight, and includes the HomeBase 3 with expandable storage up to 16TB — all at a price that makes sense. The eufyCam S4 is the better choice if you have a large property and need its 8X hybrid zoom, 164-foot tracking range, and cross-camera handoff capabilities.
If you’re on the fence, ask yourself this: do you actually need to zoom in on subjects far across your yard, or do you just want solid 4K coverage with no blind spots? The SoloCam E42 handles the latter perfectly, and you’ll save a significant amount of money.
Best Overall: Eufy SoloCam E42 4-Cam Kit
For anyone wanting a complete 4K system with 360° coverage, AI tracking, and no monthly fees, this is the kit to buy. The HomeBase 3 included in the box makes setup effortless.
Runner-Up: Eufy eufyCam S4 4-Cam Kit
- Total Property Coverage with Revolutionary 2-In-1 Design: Secure every...
- AI Tracking from Close-Ups to Cross-Zones: Each camera independently...
- Forever Solar Power & Effortless Setup: Skip the hardwiring and...
Best for large estates where you need the triple-lens design, 8X zoom, and cross-camera tracking. The Starlight Color Night Vision and 105 dB siren add serious deterrence.
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