5 Best Cameras to Pair With SoloCam S340 + HomeBase 3

Written by Ethan Walker

You already have the eufy SoloCam S340 and HomeBase 3. That gives you a strong starting point; but buying your next camera is where many security systems either become much better or simply become more expensive.

Some high-risk locations may benefit from more than a standard surveillance camera. If your garage, driveway, or entrance also needs strong motion-activated lighting, read our Ring Floodlight Cam Wired Plus review to see whether combining an outdoor camera with built-in floodlights makes more sense for that location than adding another conventional camera.

The mistake is assuming that because the S340 works well, the smartest upgrade is automatically another S340.

It might be. But in many homes, the better move is adding a camera that does something your current S340 setup does not.

Maybe your S340 already watches the driveway perfectly, but you still have a side yard that needs a permanent view.

Maybe the S340 handles flexible pan-and-tilt coverage, but you want a fixed camera constantly watching one important entrance.

Or perhaps your biggest weakness is a busy area where you want more dependable power, stronger nighttime monitoring, higher-resolution fixed coverage, or a camera better suited to recording activity throughout the day.

That is why this guide does not simply rank five cameras from most expensive to least expensive.

We are looking at these cameras as additions to an existing SoloCam S340 + HomeBase 3 setup and asking one important question:

Don't Build a Security System With Five Cameras Doing the Same Job

A good multi-camera system should work more like a team.

Your SoloCam S340 can handle areas where its flexible viewing and movement are especially valuable. Your next camera can then focus on a completely different weakness around the property.

If the cabling work is the main reason you are hesitating on a full PoE setup, compare the eufy SoloCam E42 vs S340 to see how two standalone eufy cameras approach outdoor coverage when easier placement matters more than having every camera connected to a central NVR.

For example, instead of placing similar cameras everywhere, you could build a setup where:

• Your SoloCam S340 watches a driveway or large open area where flexible coverage matters.
• A second camera keeps a fixed view on a gate, side entrance, garage, or backyard door.
• Another camera handles an area where you want more persistent power or longer recording coverage.
• Your HomeBase 3 becomes the central part of the compatible system instead of managing completely separate camera setups.

Where SoloCam S340 Owners Usually Need More Coverage

One S340 can cover a lot, but one camera cannot physically watch every important area around a home at the same time.

As your system grows, the gaps often become easier to see.

• Front driveway: already covered by the S340.
• Side gate: still needs its own dedicated view.
• Back door: may need a fixed camera watching continuously.
• Garage: may benefit from a camera with a different power setup.
• Backyard: may need broader or more permanent coverage.
• Dark corner of the property: may benefit from stronger nighttime-focused monitoring.

That is where pairing the right cameras becomes more important than simply buying another highly rated model.

Local-storage planning matters outside traditional NVR systems too. If you also use eufy equipment, our guide to HomeBase 3 with a hard drive or SSD explains how expanding the S380 can give compatible cameras much more room for locally stored security footage.

What We Looked for in the Best S340 + HomeBase 3 Companion Cameras

For this guide, we are prioritizing cameras that make sense as part of a larger eufy security system, rather than judging each product in isolation.

The strongest choices are the ones that can give an S340 owner a meaningful reason to add another camera.

• HomeBase 3 compatibility and how naturally the camera fits into the broader system.
• Different coverage strengths rather than simply duplicating what the S340 already does.
• Video quality that makes the camera useful for identifying important activity around the home.
• Power strategy; solar, battery, or continuous power depending on where the camera will be installed.
• Night monitoring for entrances, driveways, yards, and other low-light locations.
• Local-storage value for buyers building around HomeBase 3.
• Real installation purpose: driveway, perimeter, gate, backyard, garage, entrance, or another specific security gap.

So, Which Camera Should You Add Next?

If you want the strongest overall addition, one camera stands out because it complements the S340 particularly well instead of simply copying its role.

But it will not be the best choice for everyone.

A homeowner who needs premium fixed outdoor coverage should make a different choice from someone who wants continuous monitoring of a high-traffic area.

Likewise, someone expanding cameras around several entrances may care more about value per camera than getting the most premium model available.

Connectivity should be part of that planning too. If maintaining a constant wireless connection at every camera location is difficult, compare home security cameras that don’t need constant Wi-Fi to see which types of local-storage and alternative-connectivity setups may fit those locations better than a conventional Wi-Fi-dependent camera.

5 Best Cameras to Pair With SoloCam S340 + HomeBase 3 Compared

If you already own a SoloCam S340 and HomeBase 3, your next camera should earn its place in the system. Adding another camera only makes sense when it protects an area differently, improves recording coverage, or solves a weakness your S340 cannot handle as efficiently.

That is why the five cameras below are not ranked only by resolution or price. We looked at the job each camera can perform beside an existing S340; from 24/7 wired recording to fixed 4K solar coverage, lower-cost expansion, and advanced multi-lens tracking.

Storage capacity becomes just as important in hub-based camera systems as the number of cameras grows. If you also run a eufy setup, our comparison of the best hard drives for HomeBase 3 explains which capacities make sense for smaller systems, growing multi-camera setups, and homeowners who want more local recording history.

What Changes When You Already Own a SoloCam S340?

The SoloCam S340 already gives you something many fixed cameras cannot: motorized 360° monitoring combined with dual-lens coverage and solar-powered outdoor operation.

That changes how we judge the next purchase.

Paying for another camera simply because it has an impressive specification sheet can leave you with two cameras solving essentially the same problem. A stronger expansion strategy is to give each camera a defined responsibility.

• Use the S340 where movement and wide-area monitoring are valuable.
• Use the E330 Professional where losing activity between motion events is unacceptable and wired 24/7 recording is practical.
• Use the S3 Pro where you want a premium fixed 4K view with strong nighttime performance and solar maintenance.
• Use the S4 when one additional location is too large for a simple fixed camera and advanced tracking and zoom justify another motorized camera.
• Use the 3C when you want to spread 4K coverage across more fixed positions while keeping expansion cost under control.
• Use the S330 when you want a straightforward fixed 4K camera with integrated solar for perimeter monitoring.

Key Differences at a Glance

The Fastest Way to Choose the Right Camera

Forget the model names for a moment and look at the location where the camera will actually be installed.

That usually makes the decision much easier.

• Busy driveway or entrance with available power: E330 Professional is the strongest candidate because 24/7 recording can capture activity beyond short motion-triggered events.
• Important fixed outdoor zone without convenient wiring: S3 Pro gives you premium 4K solar-powered coverage with a strong emphasis on low-light performance.
• Large backyard or another area with movement in many directions: S4 makes more sense when its multi-lens PTZ system and 18X Auto Zoom can actually be used.
• Several entrances that each need their own camera: 3C becomes attractive because you can prioritize fixed 4K coverage rather than paying for premium movement features at every position.
• Gate, side yard, shed, or perimeter location with good sunlight: S330 provides a simpler integrated-solar approach for a fixed monitoring position.

Which Camera Gives the S340 the Strongest Overall Partner?

For a typical S340 owner, our strongest overall pairing is the eufyCam S3 Pro.

The reason is not that it tries to outperform the S340 at the same job. Its value comes from doing the opposite.

The S340 can remain responsible for a broad area where its movement and dual-lens design are useful. The S3 Pro can stay locked onto a high-priority fixed zone where image detail, nighttime visibility, detection, and low-maintenance solar operation matter more than pan-and-tilt movement.

That creates two different layers of coverage instead of paying for two cameras that constantly overlap.

But the S3 Pro Is Not Automatically the Right Upgrade

Your property may have a more specific weakness, and that can make one of the other four cameras the smarter purchase.

If your biggest concern is continuous recording, we would move toward the E330 Professional. If you need another camera capable of actively watching a very large area, the S4 becomes more interesting. Budget-conscious expansion favors the 3C, while the S330 remains a compelling option for straightforward fixed solar coverage.

Not every security camera needs centralized NVR storage. Cameras with built-in card slots can record locally too, and our guide to microSD cards for security cameras explains how capacity, compatibility, video-write performance, and recording workload affect which card makes sense for local surveillance footage.

In other words, there is no reason to pay for the S3 Pro simply because it is our strongest overall companion if another camera solves your particular coverage problem more directly.

Next, we will look more closely at the camera that gives the SoloCam S340 what we consider the strongest all-around second layer of outdoor protection.

 See Our Top Pick

Our Strong Recommendation: eufyCam S3 Pro

If you already own a SoloCam S340 + HomeBase 3, our strongest overall addition is the eufyCam S3 Pro.

Not because your S340 needs replacing. In fact, the reason this pairing works so well is that the S3 Pro can take over a completely different security responsibility.

The S340 is at its best when you want a camera that can move, track activity, cover a wide area, and use its dual-lens system to follow what is happening around the property.

The S3 Pro gives you another strategy: choose one location that matters enough to deserve its own permanent 4K view, point the camera there,

A wired NVR is not the only way to build a multi-camera system with centralized local storage. If running Ethernet to every camera is difficult, our eufyCam S3 Pro vs S330 comparison looks at two HomeBase 3-compatible alternatives that combine 4K outdoor monitoring, solar charging, and local storage without requiring the same PoE cabling approach.

The Biggest Upgrade Is Having Two Cameras That Don't Need to Compete

Think about a driveway connected to a front walkway and side gate.

Your S340 can be extremely useful there because it can monitor movement across a larger space. But a movable camera introduces an unavoidable reality: it cannot point at every direction simultaneously.

If it follows activity toward one part of the property, another important area is no longer centered in its view.

This is where a dedicated S3 Pro changes the system.

You can keep the S3 Pro permanently aimed at the location you consider non-negotiable; such as the front gate, vehicle entrance, garage door, backyard entrance, side passage, or another high-value approach to the house.

Your S340 is then free to do what you bought a PTZ-style camera to do: watch the larger environment.

Why the S3 Pro Earns the Premium Position

A fixed camera only strengthens this strategy if the footage it captures is useful. This is where the S3 Pro's imaging and detection package becomes important.

• 4K UHD video gives the dedicated camera enough resolution to preserve more detail around important outdoor areas.
• MaxColor Night Vision makes nighttime monitoring one of the S3 Pro's central strengths rather than treating darkness as an afterthought.
• Its 1/1.8-inch sensor positioning is particularly relevant when the camera will spend every night watching the same critical outdoor zone.
• Radar + PIR dual motion detection gives the S3 Pro another layer of event-detection capability around the area assigned to it.
• SolarPlus 2.0 reduces the installation compromises of adding another outdoor camera where permanent electrical power is not conveniently available.
• The 13,000mAh battery supports the solar-powered design and gives the camera a substantial internal power reserve.
• HomeBase 3 integration keeps the additional camera within the local eufy ecosystem you are already building around.
• The system supports expandable local storage up to 16TB, giving a growing multi-camera setup considerably more room than relying only on small amounts of camera-level storage.
• The system is positioned around local security without a required monthly subscription, which becomes increasingly important as you add more cameras.

Where We Would Install the S3 Pro First

The best location is not necessarily the largest area on your property. Your S340 is already well suited to large spaces where movement is useful.

Instead, give the S3 Pro the location where missing the decisive moment would matter most.

• Driveway entrance: maintain a dedicated view of vehicles and people entering the property.
• Front gate: keep the primary access point inside one consistent frame.
• Garage door: watch the area where vehicles, tools, bikes, or other valuable property may be exposed.
• Side passage: cover a narrow approach that may not justify dedicating the S340's full PTZ capability to it.
• Back door: create a permanent second layer of coverage while the S340 watches the wider backyard.
• Dark perimeter location: take advantage of the S3 Pro's low-light emphasis where nighttime identification matters.

Nighttime Coverage Is a Major Reason to Choose It

Daytime security footage is relatively easy for modern cameras. The more difficult test begins when the property becomes dark.

This matters because your second camera should not merely increase the number of viewpoints during ideal conditions. It should improve the system when surveillance becomes more difficult.

The S3 Pro's MaxColor Night Vision and low-light-focused sensor design make it especially attractive for an entrance, driveway, yard, or perimeter area where useful nighttime detail is a priority.

In other words, you are not simply adding another 4K badge to your security system. You are strengthening the part of the day when camera performance can become much more demanding.

Solar Power Makes Expansion Easier; But Placement Still Matters

One reason many S340 owners chose that camera in the first place is the freedom of avoiding a new electrical run.

The S3 Pro preserves that advantage.

Its SolarPlus 2.0 system and 13,000mAh battery make it possible to add another outdoor viewpoint without automatically turning the project into a wired-camera installation.

That can make expansion much easier around fences, detached garages, side yards, gates, and exterior walls where a suitable outlet is not conveniently located.

Why HomeBase 3 Makes the Pairing More Valuable

If you already paid for HomeBase 3, expanding within that ecosystem can be more attractive than introducing an unrelated camera platform that requires another app, another storage method, and another set of settings.

The S3 Pro fits into the HomeBase 3-centered approach while supporting eufy's local-storage strategy and AI features.

That becomes increasingly valuable as the camera count grows.

Instead of thinking about each camera as an isolated product, you can think about the property as a collection of security zones feeding into the broader system.

What Owners Like About the S3 Pro

The Amazon customer feedback you provided reinforces several of the reasons the S3 Pro works well in this role.

Positive feedback repeatedly centers on areas that matter for an outdoor companion camera:

• Clear image quality and useful 4K detail.
• Strong nighttime image performance.
• Relatively straightforward installation and setup.
• Good property coverage when cameras are positioned correctly.
• Solar charging that can maintain the battery well when the installation receives sufficient sunlight.
• Useful integration with HomeBase and the eufy app.

The Amazon listing shown also carries an overall customer rating of about 4.2 out of 5 from roughly 1,150 global ratings at the time of the screenshot.

The S3 Pro Is Not the Best Choice for Every S340 Owner

There are three situations where we would choose another camera from this comparison instead.

When We Would Choose the E330 Professional Instead

There is one major reason we would immediately move away from the S3 Pro: you want 24/7 recording.

If you have power available at the installation location and your priority is recording continuously rather than relying primarily on event-triggered battery-camera behavior, the E330 Professional is the stronger tool for that job.

This is particularly relevant around a busy driveway, storefront-style entrance, garage approach, or another high-traffic area where you may want footage before, during, and after activity rather than only the event the camera decides to capture.

Who Should Buy the eufyCam S3 Pro?

The S3 Pro is our strongest recommendation if most of these statements describe your setup:

• You already own a SoloCam S340 + HomeBase 3.
• You want a second camera that complements the S340 rather than simply copying its role.
• You have an important entrance, gate,

  The same whole-system approach applies if you use eufy instead of a traditional NVR. Our guide to HomeBase 3 accessories covers useful add-ons for building a more complete S380 setup, including options that can improve storage, installation, and everyday use as your camera system grows.

  driveway, garage, or perimeter location that deserves a dedicated fixed camera.
• 4K image quality is important to you.
• You care heavily about nighttime monitoring.
• Running permanent electrical power to the camera would be inconvenient.
• The mounting location receives enough sunlight to make solar charging practical.
• You want to continue building around HomeBase 3 and local storage.
• You prefer a security setup that does not make a monthly subscription a requirement for its core local-storage approach.

Who Should Skip It?

Do not pay the S3 Pro premium merely because it ranks first here.

• Choose E330 Professional if 24/7 recording is the requirement you care about most.
• Choose eufyCam S4 if you specifically need another large-area camera with 360° PTZ coverage, multi-lens monitoring, tracking, and powerful zoom.
• Choose eufyCam 3C if you want to spread your budget across several fixed 4K viewpoints.
• Choose eufyCam S330 if you prefer a proven, simpler integrated-solar 4K expansion option and do not need the S3 Pro's more premium low-light positioning.

Which Camera Should You Add to Your SoloCam S340?

At this point, choosing between these five cameras should not come down to which model has the longest feature list.

You already own the SoloCam S340 + HomeBase 3, so start with something more useful: identify what your current system still cannot protect the way you want.

Once you define that missing job, the right camera becomes much easier to find.

Choose eufyCam S3 Pro If You Want the Best Overall Companion

Start with the eufyCam S3 Pro if you want the safest all-around recommendation and do not have a specialized requirement such as 24/7 recording.

This pairing makes sense because the two cameras can operate differently. Your S340 can continue covering a broad area with its movable dual-lens system, while the S3 Pro stays dedicated to one important fixed viewpoint.

• You want premium 4K fixed coverage.
• Nighttime image performance is a major priority.
• You want solar-powered outdoor installation.
• You have a gate, entrance, driveway, garage, or perimeter zone that should always remain in view.
• You want to continue building around HomeBase 3 and local storage.
• You do not need true wired 24/7 recording at this location.

Choose E330 Professional If Missing Footage Is Your Biggest Concern

The E330 Professional becomes our preferred choice when recording continuity matters more than solar convenience.

Its plug-in design allows it to handle a job the battery-and-solar cameras in this comparison are not primarily designed around: 24/7 continuous recording.

• You have permanent power available near the camera.
• You want to review activity beyond individual motion clips.
• You are monitoring a busy driveway, garage, entrance, or walkway.
• You want 4K recording and expandable local storage.
• You are comfortable planning for the greater storage demands of continuous footage.

Choose eufyCam S4 If One S340 Still Can't Cover Enough Ground

The eufyCam S4 is the unusual choice in this comparison because it does not try to avoid overlapping with the S340.

Not every exterior location needs to be tied directly into the NVR. For driveways, garages, and entrances where extra nighttime illumination matters, comparing wireless floodlight cameras can help you decide whether a camera with built-in lighting and more flexible placement would complement your main wired surveillance system.

Instead, you buy it when you actually want another highly flexible camera for a second large monitoring zone.

Its triple-lens system combines a 4K upper camera with dual 2K PTZ lenses, along with 360° coverage, tracking, and up to 18X Auto Zoom.

• You have a large backyard, front yard, open driveway, or broad property boundary.
• A fixed camera would leave too much of the area outside its view.
• You specifically want another PTZ-style monitoring point.
• Tracking and zoom are more valuable to you than simply adding another fixed viewpoint.
• The installation location receives suitable sunlight for its solar system.

Choose eufyCam 3C If You Need More Cameras, Not More Premium Features

Sometimes the weak point in a security system is simply not having a camera in enough places.

That is where the eufyCam 3C becomes particularly attractive.

Instead of concentrating more of your budget into one premium camera, the 3C gives you a way to build out dedicated 4K viewpoints around the property while retaining HomeBase 3 integration and local-storage benefits.

• You need to cover several fixed locations.
• 4K image quality matters more than PTZ movement.
• You already have the S340 handling your large flexible zone.
• You want dedicated cameras for a gate, garage, back door, and side entrance.
• You are trying to control the cost of a larger HomeBase 3 system.

  Camera selection matters just as much as the recorder, especially when one location needs to follow movement across a driveway or large yard. Our guide to the best PTZ security cameras compares motorized options for wide-area coverage, auto tracking, local recording, and different wired or wireless installation needs.

Choose eufyCam S330 If You Want Simple 4K Solar Expansion

The eufyCam S330 sits between the budget-oriented 3C and the more premium S3 Pro.

Its appeal is straightforward: give an important outdoor location its own fixed 4K camera with integrated solar charging, without paying for another pan-and-tilt system.

• You want integrated solar rather than periodic manual charging.
• You prefer a fixed camera for perimeter monitoring.
• You want 4K video and HomeBase 3 integration.
• You value local expandable storage and no-required-monthly-fee positioning.
• You want a more established solar-camera option without needing S4-style PTZ complexity.

Still Unsure? Choose Based on the Problem You Need to Solve

A Better Way to Plan Your Whole Camera Layout

You do not have to choose one model and install that same camera everywhere. In many homes, the stronger approach is to match each camera to the physical conditions of the location.

A well-planned HomeBase 3 system could look like this:

• Wide driveway or front yard → SoloCam S340
  Use its flexible coverage where activity can move across a large area.
• Front gate or important entrance → S3 Pro
  Keep premium fixed 4K coverage pointed at a critical access point.
• Garage near an outlet → E330 Professional
  Use continuous recording where permanent power is easy to provide.
• Large backyard → S4
  Add another highly flexible monitoring zone when fixed coverage is not enough.
• Side doors and secondary entrances → 3C
  Add dedicated 4K viewpoints without paying for PTZ hardware everywhere.
• Sunny perimeter location → S330
  Use integrated solar for a fixed area that does not need motorized movement.

Ask These 4 Questions Before You Buy

If you are still comparing two models, answer these four questions in order:

1. Does this location need 24/7 recording?
   If yes, start with the E330 Professional.
2. Does this location need to move and track across a very large area?
   If yes, consider the S4. If your existing S340 can already handle that job, you may not need another PTZ-style camera.
3. Does the location receive enough sunlight for solar charging?
   If yes, S3 Pro or S330 becomes more attractive. If not, reconsider the power strategy before mounting a solar camera there.
4. Are you trying to protect one critical location or several secondary locations?
   For one premium location, choose S3 Pro. For several fixed viewpoints where budget matters, 3C can make more sense.

You Already Found the Weak Spot; Now Decide Whether to Leave It There

If you reached this point because your SoloCam S340 cannot fully cover a second entrance, garage, side gate, backyard, or another important area, the decision is no longer only about comparing camera specs.

You have identified a part of the property where your current system is asking one camera to do too much.

Waiting does not improve that coverage.

An NVR is not the only option when internet availability is part of your security planning. If you need monitoring for a property where normal home Wi-Fi is unavailable or unreliable, our guide to a security camera that connects to your phone without WiFi explores alternative ways to keep a camera accessible without building the entire setup around a traditional home Wi-Fi connection.

One S340 Can Cover a Lot; But It Cannot Watch Two Directions at Once

The S340's movement is one of its biggest advantages, but movement does not create two cameras.

If the camera turns to follow activity across the driveway, it is no longer centered on the area it was watching before.

That may be completely acceptable for general monitoring. But once you know there is a location you want watched independently, adding a second camera changes the system from shared coverage to dedicated coverage.

• Your S340 can continue handling the large area where tracking and flexible viewing are useful.
• An S3 Pro can stay permanently focused on a critical entrance with premium 4K solar coverage.
• An E330 Professional can continuously record a busy area where permanent power is available.
• An S4 can take responsibility for another large zone where fixed coverage would be too restrictive.
• A 3C or S330 can give a secondary entrance or perimeter location its own dedicated 4K viewpoint.

The Best Time to Expand Is When You Know Exactly What the New Camera Will Do

Buying another security camera without a plan is easy. That is also how homeowners end up paying for overlapping views and features they rarely use.

You now have a better reason to make the purchase: each of these cameras solves a specific limitation.

Don't Wait for an Incident to Reveal Where Your Camera Couldn't See

Security footage becomes valuable after something unexpected happens. Camera placement has to be decided before that moment.

If you already know that the garage disappears from view when the S340 follows someone toward the gate, or that your backyard entrance has no dedicated camera at all, you already know where the system can be improved.

The value of adding another camera is not owning more hardware. It is having another viewpoint available when you eventually need to review what happened.

Already Own HomeBase 3? Make the Hardware You Have Work Harder

You have already invested in the central part of the system.

That matters because the decision is different from starting a completely new security setup. You are choosing how to extend an existing HomeBase 3-centered camera network.

Adding the right compatible camera can give that system another useful viewpoint while continuing the local-storage approach you selected in the first place.

And as the number of cameras grows, expandable HomeBase storage becomes increasingly useful; particularly if you add a recording-heavy option such as the E330 Professional.

Don't Let a Temporary Price Decide the Wrong Camera

A discount can be useful, but it should come after choosing the correct camera; not before.

Buying the 3C because it happens to be cheaper does not help if you actually need 24/7 E330 recording. Paying more for the S4 makes little sense if all you need is a fixed view of a side gate.

First choose the camera that solves the coverage problem. Then check the current listing price and condition before ordering.

If You're Ready to Expand, Start With the Camera That Adds the Most

For most SoloCam S340 + HomeBase 3 owners, that remains the eufyCam S3 Pro.

It gives your existing S340 a strong partner without requiring both cameras to perform the same role: S340 for flexible monitoring, S3 Pro for dedicated premium 4K solar coverage.

If your actual priority is continuous recording, choose the E330 instead. If you need another large PTZ zone, choose the S4. If expansion cost matters most, consider the 3C. If you want a simpler fixed solar option, the S330 remains compelling.

Need 24/7 recording instead?

Final Verdict: Build Around Your S340, Don't Duplicate It

If you already own a SoloCam S340 + HomeBase 3, you have already solved one of the hardest parts of outdoor surveillance: covering a large area with a flexible solar-powered camera.

Your next purchase should make that system more complete, not simply give you another camera doing the same job.

After comparing these five options, the eufyCam S3 Pro is our strongest overall recommendation for most S340 owners.

Why We Would Add the S3 Pro First

The S3 Pro does not need to compete with the S340 for the same role.

Mount your S340 where its movement and broad coverage provide the greatest advantage. Then aim the S3 Pro at the location you consider too important to leave dependent on a moving camera.

• 4K UHD for a detailed fixed outdoor viewpoint.
• MaxColor Night Vision and low-light-focused imaging for stronger nighttime monitoring.
• Radar + PIR detection for its assigned security zone.
• SolarPlus 2.0 and a 13,000mAh battery for locations where running permanent power would be inconvenient.
• HomeBase 3 integration for owners already invested in the eufy ecosystem.
• A local-storage approach with expansion potential as your camera system grows.

But Buy for Your Property, Not Our Ranking

The S3 Pro wins our overall recommendation, but that does not mean everyone reading this guide should buy it.

A specialized problem deserves a specialized camera.

Our Final Ranking

If This Were Our S340 + HomeBase 3 Setup

We would resist the temptation to install identical cameras at every corner of the property.

Instead, we would assign each camera a specific job.

• SoloCam S340 → large driveway or front-yard area where movement and flexible viewing matter.
• S3 Pro → critical fixed entrance that should remain under dedicated 4K coverage.
• E330 Professional → garage or high-traffic area near electrical power where 24/7 recording is worth having.
• S4 → second large open zone where another PTZ-style camera genuinely adds useful coverage.
• 3C or S330 → secondary gates, side entrances, sheds, or perimeter locations that need their own fixed viewpoint.

You may not need all five. In fact, most homes probably do not.

The smarter goal is to add cameras until the important approaches to your property have the right kind of coverage; not until every available mounting position has a camera attached to it.

Need 24/7 recording instead?

Price note: Amazon prices, discounts, availability, kit contents, and product condition can change. Check the current listing carefully before ordering, especially when comparing new and renewed/refurbished configurations.

Frequently Asked Questions

Still deciding which camera belongs next to your SoloCam S340 + HomeBase 3? These answers cover the most important compatibility, recording, power, storage, and expansion questions to consider before buying.

What is the best camera to pair with SoloCam S340 and HomeBase 3?

Our strongest overall recommendation is the eufyCam S3 Pro. The reason is not simply that it is a premium camera; it gives the S340 a useful second role instead of unnecessarily duplicating it.

You can use the S340 for flexible, wide-area monitoring while keeping the S3 Pro permanently aimed at a high-priority location such as a driveway entrance, gate, garage, or backyard access point.

Its combination of 4K video, MaxColor Night Vision, Radar + PIR detection, SolarPlus 2.0, and HomeBase 3 integration makes it our favorite all-around companion.

Should I buy another SoloCam S340 or add a different eufy camera?

Another S340 makes sense when you have a second large area that genuinely needs the same type of flexible pan-and-tilt coverage.

But if your current S340 already handles that job, adding a different camera can make the overall system more capable.

For example, an S3 Pro can provide dedicated fixed solar coverage, while an E330 Professional can add 24/7 recording where permanent power is available.

Which camera is best if I want 24/7 recording?

From the five cameras in this guide, the eufyCam E330 Professional is our choice for 24/7 continuous recording.

Unlike the solar/battery-focused options, E330 uses permanent plug-in power. That makes it particularly suitable for a driveway, garage, front entrance, or another busy location where you want a broader recording timeline instead of relying primarily on motion-triggered events.

The trade-off is installation flexibility: you need access to suitable power and should plan for the additional storage demands created by continuous footage.

Which camera is best for nighttime monitoring?

The eufyCam S3 Pro is our preferred choice when low-light performance is a major buying priority.

Its MaxColor Night Vision and low-light-focused imaging system make it especially attractive for a dark driveway, entrance, side yard, or perimeter location.

Night performance still depends on placement, available ambient light, distance, and environmental conditions, so no night-vision specification should be treated as a guarantee of perfect identification at every distance.

Which camera is best for another large 360° area?

Consider the eufyCam S4 when you have another large area where a fixed camera would be too restrictive.

Its triple-lens system combines a 4K upper camera with dual 2K PTZ lenses, along with 360° monitoring, AI tracking, and 18X Auto Zoom.

However, the S4 overlaps more with the S340's flexible-coverage role than cameras such as the S3 Pro or E330. We would buy it specifically because you need another sophisticated wide-area camera; not simply because it has more advanced specifications.

Which camera is the best value for expanding to several locations?

The eufyCam 3C is our value-oriented choice for adding multiple fixed 4K viewpoints.

It makes sense when your S340 already handles the large flexible zone and you now need dedicated cameras covering locations such as a side entrance, garage, back door, or gate.

The main compromise is power. Unlike the S3 Pro and S330, the 3C does not have the same integrated-solar approach, so periodic battery charging or a compatible solar accessory may need to be considered.

What is the difference between eufyCam S330 and S3 Pro for this setup?

Both are attractive when you want fixed 4K solar-powered outdoor coverage alongside the S340.

We favor the S3 Pro as the premium choice because of its stronger low-light positioning, MaxColor Night Vision, and Radar + PIR detection package.

The S330, however, remains a compelling choice for someone who wants a more straightforward and established 4K camera with integrated solar, HomeBase 3 integration, local storage, and BionicMind features.

Can I mix different eufy camera models with HomeBase 3?

HomeBase 3 is designed to work with multiple compatible eufy camera models, which is one reason a mixed-camera strategy can make sense.

However, compatibility does not necessarily mean every camera gets every HomeBase 3 feature in exactly the same way. Storage behavior, AI features, recording modes, and other capabilities can vary by model and firmware.

Check the current eufy compatibility information for the exact camera model before purchasing, particularly if one specific HomeBase 3 feature is essential to your setup.

Do I need a monthly subscription with these cameras?

One of the main reasons to build around HomeBase 3 is the ability to use local storage. The cameras discussed in this guide are positioned around core functionality that does not require a monthly cloud subscription.

Optional services may still exist, so check the current feature and service details if you want cloud-based functionality in addition to local storage.

How much HomeBase 3 storage do I need for multiple cameras?

That depends heavily on how the cameras record.

A system saving motion-triggered events has very different storage requirements from several E330 Professional cameras recording continuously 24/7.

HomeBase 3's expandable-storage capability gives you room to increase capacity as the system grows. If you plan to use continuous recording, storage should be treated as part of the initial system design rather than something to consider only after the drive fills.

Is solar always better than a wired camera?

No. Solar and wired cameras solve different installation problems.

Solar is extremely useful when running electrical power would be inconvenient. It makes cameras such as the S3 Pro and S330 attractive for gates, fences, yards, and perimeter locations.

Wired power becomes more attractive when you want continuous recording and do not want recording behavior constrained by battery conservation. That is where the E330 Professional has the advantage.

Where should I install my second camera if I already have an S340?

Do not automatically mount the second camera beside the S340.

First open your S340 live view and identify an important location that is either outside the frame or becomes exposed when the S340 turns to follow activity.

Common candidates include the garage door, front gate, side passage, backyard entrance, second driveway angle, or another approach to the home.

That uncovered location should determine both where the new camera goes and which model you buy.

Can solar cameras stay charged all year?

They can require very little manual charging when the installation receives suitable sunlight and camera activity is reasonable, but solar performance should not be treated as identical at every property.

Shade, roof overhangs, seasonal sun angles, cloudy weather, camera activity, live viewing, and mounting direction can all affect charging performance.

This is particularly important when deciding between a solar model and a permanently powered E330.

Which camera should I buy if I still cannot decide?

For most existing SoloCam S340 + HomeBase 3 owners, we would choose the eufyCam S3 Pro.

It gives the system a useful division of labor: the S340 handles flexible wide-area monitoring while the S3 Pro provides a dedicated premium 4K solar-powered viewpoint.

If running Ethernet to every camera location is more installation work than you want, compare the best wireless home security cameras before committing to a full PoE system. Wireless models can make difficult outdoor locations easier to cover when flexible placement matters more than having every camera physically connected to the recorder.

The exception is when you already know you need something more specific: choose E330 for 24/7 recording, S4 for another advanced 360° zone, 3C for value-focused multi-camera expansion, or S330 for straightforward fixed 4K solar coverage.