Wednesday, June 12, 2024
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EufyCam 3 Review – S330 Wireless Solar 4K Camera System


Price / Value
90 %
100 %
Build Quality
100 %
Ease Of Use
100 %
Battery Life
100 %

Don’t like reading? Check out my video review on YouTube instead.

I’ve reviewed many wireless security camera systems, but one thing has remained elusive in all of those systems. That is the ability to record in 4K video resolution. We set up security camera systems to monitor, detect and review events or suspicious activity. But what is the point of recording a video that isn’t high enough video resolution to discern any details?

Finally, a company has answered my call to deliver a 4K camera system! A big thank you to Eufy for supplying the Eufy Cam 3 system for an unbiased test. Oh yeah, and there are no monthly fees! Even if you use the AI features, it is natively included with ZERO monthly fees! This post is sponsored by Eufy.

2023 Update: Pressing and holding the Sync button does not erase recorded data to maintain recorded videos.

Package Contents

In the package, you’ll have everything needed to set up and mount the cameras and connect to the HomeBase 3.

  • 2X – Eufy S330 4K Solar Wireless Cameras
  • HomeBase 3
  • Mounting Hardware & Screws For Both S330 Cameras
  • Power Cable & Ethernet Cable For The HomeBase 3
  • Type C Charging Cable
  • Positioning Guides & User Manual
  • Metal Reset Pin
Eufy Cam 3 Security System Package Contents
Eufy Cam 3 Security System Package Contents

Eufy Cam 3 Specs

S330 Camera Specs

  • Video Resolution: 4K (3840 x 2160)
  • Field of View: 130 Degrees Viewing Angle
  • Aperture: F1.4 with BSI CMOS Sensor
  • NightVision: Color Night Vision & IR
  • Battery: 13400 mAh Rechargeable Battery
  • Battery Life: Up to 365 Days
  • IP67 Rating – Water & Dust Resistant
  • 100 Lumen Motion Detection Spotlight
  • Two-Way Audio
  • Type C USB Port; 1000 Mbps LAN Port; SATA 3.0
  • CPU: Quad-core ARM Cortex-A55
  • Dimensions: 2.6 x 5.1 x 2.6in (6.5 x 12.9 x 6.5cm)
  • Alexa & Google Home Assistant Compatible

HomeBase 3 Specs

  • Self-Learning AI Algorithm For Human, Face, Pet & Vehicle Detection
  • Optionally add AI features to older Eufy models which do not support AI natively
  • Storage: 16 GB Built-In [Expandable up to 16TB With 2.5 inch HDD – Optional]
  • Dimensions: 3.1 x 4.3 x 5.7in (7.8 x 10.9 x 14.4cm)
  • Supports 24/7 recordings while using indoor camera models

Eufy Cam 3 – S330 Camera Design & Build Quality

The S330 4K Solar Cameras feel pretty solid in hand. There is no creaking, flexing or looseness when I apply pressure to the cameras directly or diagonally. This also ensures the IP67 rating to allow it to function in all seasons. The back of the camera has a weather-sealed USB charging port to prevent water from entering the camera body, along with a sync button and mounting port.

Eufy S330 Camera - Front & Back View
Eufy S330 Camera – Front & Back View

The front of the S330 camera houses the F1.4 lens with a backside illuminated CMOS sensor, which helps to allow more light to the sensor and increases light sensitivity. There are also various sensors for motion and IR, a microphone, and a powerful spotlight.

Eufy S330 Camera - Front & Back View
Eufy S330 Camera – Front & Back View

The top of the S330 camera houses a sizeable solar panel, while the bottom has a loudspeaker to communicate with visitors, both wanted and unwanted.

Camera & Eufy App Setup

It’s always recommended to set up the Eufy App and add the HomeBase 3 and cameras before you permanently install the cameras. The installation process is quite simple once you install the Eufy app and signup or log into the app. Once the app is ready, you must add the HomeBase 3 first, which must be plugged in by a power cable and connected by an ethernet cable. Some people may question why the HomeBase 3 cannot be connected wirelessly, which is likely because a WiFi signal may not be stable enough to ensure the regular transmission of 4K video files.

After the HomeBase 3 is added to the Eufy app, the next step is to add both S330 cameras to the app. Select the S330 camera in the app and press the Sync button located at the rear of the camera body next to the mounting port while keeping the S330 camera near the HomeBase 3. Repeat this step for the second S330 camera, and you’re done adding all hardware to the app.

Eufy App Settings

The Eufy app really offers a ton of settings, and I’ve been able to set everything up exactly how I wanted.

On the main dashboard, you have quick access to all added cameras (you can change the camera order, by the way). The primary tabs I use are the Devices, Events and Security tabs.

Eufy App Main Dashboard
Eufy App Main Dashboard

The HomeBase 3 settings allow you to add “Familiar Faces” under Face Management. This allows the AI system to recognize people in the household and tag them with names you specify. You can review faces that the AI camera picks up, or you can take a selfie with the Eufy App or select an image from your phone’s media library. There is also an option to ignore notifications from familiar faces so that you’re only alerted when a stranger comes around the house.

The HomeBase 3 also allows you to add AI analysis to other compatible Eufy cameras. This ability will come later through firmware updates.

While the HomeBase 3 comes with 16 GB of onboard storage, you have the ability to add up to an additional 16 TB of storage! That is one of the highest storage expansion options I’ve seen supported.

HomeBase 3 Settings
HomeBase 3 Settings
Events Tab Filtering Options
Events Tab Filtering Options

Events Tab Settings

Getting into the Events tab, you can see in the screenshot that you have a variety of filters to choose from to narrow down video events using the Smart Filter option.

You can filter based on the following:

  • Event Types
  • Detection Types
  • Connected Devices
  • Video Storage Location

In the screenshot, you can see there are two familiar faces that I added to the HomeBase 3 settings earlier. Whenever I review the events tab, I can tap on a familiar face, and it will narrow down the video clips to only show videos where a certain face appears in the video. A convenient feature to have, especially for those of you who have kids with a curfew.

Even if you have not added a familiar face, the AI will still add unfamiliar faces to the top for you to filter through if the person came close up enough to the camera.

Each video clip also shows which camera captured the video and is tagged with text to designate if it detected the following elements:

  • Human
  • Pet
  • Vehicle

Events can also be deleted if necessary.

Eufy S330 Camera Settings

Motion Detection allows a wide range of sensitivity settings, but I’ve left mine on the default value. An activity zone can also be enabled to only capture motion in specific areas if you have false triggers, such as swaying tree branches. The types of motion detection can also be toggled thanks to AI processing.

Power Manager allows changing of the video clip lengths from as quick as 5 seconds long to as long as 120 seconds long. A retrigger or cooldown time can also be set between video clip recordings to avoid numerous video clips and app notifications. Longer video clips will drain the battery more quickly.

I’ll touch on the Solar Dashboard later since that ties in mainly to the 365-day battery life performance.

Eufy S330 Camera Settings
Eufy S330 Camera Settings

Unlike other systems I’ve tested before, the spotlight function provides good illumination. The spotlight can be set up to low, medium, or high. I usually leave it medium or high, and my night vision videos come out quite nicely. Having a spotlight in a dark area of the house also acts as an excellent deterrent. Speaking about deterrents, a theft alarm can be sounded on both the S330 cameras and the HomeBase 3 if anyone tries to steal the cameras.

The camera’s default recording quality is 4K, of course, but you can also lower that to 2K or Full HD if you want to preserve battery and storage even more, especially during the Winter months. I leave both of my cameras on 4K to have the best possible video quality.

If you want to ensure that you see 4K videos, set the Streaming Quality to 4K. If you have limited data on your cellphone or weak WiFi, you can set the streaming quality to Auto in a pinch.

Eufy App Settings Video
Eufy App Settings Video

Why settle for traditional IR night vision when you have fully illuminated color night vision? I’ve kept both S330 cameras to full color night vision while still maintaining 100% battery life on my front camera, which receives sunlight easily. If you already have enough exterior lighting, you have the option to turn off both the IR function and the spotlight.

The speaker located on the underside of the S330 cameras is quite loud at the max volume. I find that medium volume is loud enough to communicate with visitors or delivery drivers.

I’ve set the app Notifications to Most Efficient because I want to be notified of activity as soon as it happens so that I can pull up a live view video and check out what’s happening or chat with the visitor. You can set other notification options if getting alerts as soon as possible is not a priority.

S330 Night Vision Settings
S330 Night Vision Settings

I like to have the red LED light always on my cameras so that people know the cameras are powered on and functioning, but this can be turned off if you like.

Cameras can be made sharable with others if necessary.

Under the Security tab, certain modes can be set to reflect how you’d like the cameras to behave when you’re home, away from home, or in other situations. Custom modes can be set to suit almost any need. For short-term activities like mowing the lawn, shovelling snow, etc., you can snooze notifications from the cameras individually for preset lengths of time. You can also disarm the entire system if you have long-term construction or renovation jobs.

Eufy App Settings - Security & Miscellaneous
Eufy App Settings – Security & Miscellaneous

Eufy S330 Installation

S330 installation is quite simple. Each camera only requires two screws to secure it. Simply place the positioning guide, drill two holes, secure the two mounts with the supplied screws and attach the S330 camera body by rotating it until it is threaded in. There is also a stopper to rotate against the rear camera body to ensure it stays in place. A tightening knob located at the base of the mount allows you to secure the camera angle and tilt.

Eufy recommends angling the camera body down to around 7 degrees. This gives you a nice wide 130-degree view while keeping the body sloped down to have snow and water slide off the body.

Eufy App Notifications

I’m quite happy with the speed and responsiveness of the Eufy app notifications. Alerts are quick to receive, and once tapped, the app and associated live view video is loaded within a matter of seconds, which is impressive since it is set to stream in 4K quality on my phone.

Eufy App Alerts & Notifications
Eufy App Alerts & Notifications

Video Quality & Playback

Why would you buy a 4K camera system? Well, for the 4K video quality, of course. Video resolution is exactly what you would expect from a 4K camera system. Videos look clear both during the day and at night. The microphone pickup is also pretty surprising because I’ve been able to hear some conversations from passersby as they pass my house.

It’s difficult to showcase the video quality in a photo, so please click this link to view the video quality:

Battery Life Claims

So Eufy says you can get 365 days of battery life with this system. Imagine never having to unplug a camera to charge it back up or running a cable and power bank to it. Well, that could actually be a reality, judging by what I’ve seen so far.

Eufy S330 Battery Life
Eufy S330 Battery Life

I’ve positioned one camera on the house’s front wall and the other one facing my driveway. The front camera receives some sunlight throughout the day because a large tree casts shadows depending on the position of the sun during the day. Even with the camera’s solar panel being exposed to shade from the tree, the camera has maintained a full 100% battery life. This is with 4K video recording, the spotlight set to medium brightness, the red status LED always on and set to detect all types of motion with a 5-second trigger time between each 20-second video. It’s worth noting that it has been very overcast where I am at the time of testing the system, yet the battery life has been amazing.

Winter has not arrived yet, which is usually accompanied by more gloomy days and snow covering the solar panels. That will lead to diminished charging capability, but certain settings can be made in the app to prolong battery life during these periods if necessary. This is something I will monitor and update if I need to make any changes to settings. With a 13,400 mAh battery built-in, I doubt I will need to, though.

Eufy S330 Camera Located Near Garage
Eufy S330 Camera Located Near Garage

My second S330 camera, located near my garage, has not maintained 100% battery life because of where I positioned it. It is situated below a roof overhang, limiting the amount of solar charging it receives daily. There are also two trees on the camera’s right, which constantly obstruct most sunlight from reaching the solar panel. Even so, the camera has maintained around an 87% charge since the overcast days have cleared up.

One thing to note is that I experienced increased battery drain on both cameras since I played around heavily with the settings during the first two to three weeks to get properly acquainted with the cameras and the system overall. Now that my settings are pretty much dialed in, I expect my garage camera’s battery level to increase with fewer overcast days.

Can I Recommend The EufyCam 3 Wireless 4K Solar Camera System?

Eufycam 3 Solar 4K Wireless Camera
Eufycam 3 Solar 4K Wireless Camera

If you’re looking for a 4K camera system, this is the only wireless 4K system I know of. Could there be other systems out there that I’m not aware of? Sure, but the video quality isn’t the only important factor when choosing a camera system. I’ve used other camera systems where the video quality was Full HD or 2K, but it took forever to load up live view video and to receive notifications on my phone. So it’s impressive the speed at which I receive app alerts and how quickly I can pull up live view video.

Cost is another factor to consider when choosing a security system. Many systems require a monthly fee to enable cloud storage or even AI functionality, and those costs add up quickly. The Eufycam 3 system has no monthly fees since you have unrestricted access to the AI system, and you can add up to 16 TB of data, which is seriously impressive. If you want to have offsite backups for added peace of mind, you can pay for a Cloud plan, but I’m perfectly happy with local storage.

The ability to install the cameras and never have to touch them again to top up the battery life is a welcome breath of fresh air and makes this system truly wireless.

If you’re interested in picking up the new EufyCam 3 Camera System, please use the affiliate links below with the promotional codes for a discount:

➡️ 🇺🇸 US: Use $50-off-code “EUFYCAM4K” on eufyCam 3 at both Amazon and; also applicable to eufyCam 3C on, valid until Oct. 15. ➡️Amazon: ➡️

➡️🇬🇧 UK: Use £40-off-code “EUFYCAMNEW” on eufyCam 3 on; also applicable to eufyCam 3C at both Amazon and ➡️ ➡️Amazon:

➡️🇩🇪 DE: Use €40-off-code “CAM3EUFY” on eufyCam 3 on; also applicable to eufyCam 3C at both Amazon and, valid until Oct. 15. ➡️ ➡️Amazon:

Did I miss something in my review? Do you have any unanswered questions? Let me know in the comments below, or leave a comment on my YouTube video and I will do my best to answer it 🙂

Some links may be referral links, which means I earn a small commission for qualifying sales. There is no additional cost to you.


  1. Thank you for the detailed review & continued following up (there’s still a couple of queries you need to reply to).

    But I’d like to let you know that the Sync Button reset flaw/bug/security issue has been patched sometime in December 2022.

    Discussion about it here:

    OP writes:
    “Hi Drake, sorry for the late reply, but the Sync button issue still exists. If someone does also walk away with the camera, the video files are encrypted to prevent them from accessing it, but your video clips will still be deleted with it Sync button is held down.”

  2. You mention quite frequently that the S330 camera has 4K resolution. But how many frames per second (fps) is the video? 4K resolution is great, but if the frame rate is less than 20fps any movement in the video gets blurry, especially at night.

    • I know that some security experts have claimed to be able to stream other user’s camera feeds through VLC, which is concerning if that is still the case. They haven’t been able to hack into the system though and make setting changes.

  3. Hi Adrian, Thank You for the very informative review. Can I ask, Can you add additional kit, auch as A 3rd camera, spotlight camera or door bell video camera to this kit

    • Hi Gerry, you can definitely add another S330 camera to the system since it is recognized by the new HomeBase 3. Eufy did say that their other products would be supported by the HomeBase 3 later next year, but did not give a timeline. This is what their site says “HomeBase 3 is compatible with all eufyCam models, eufy Battery Doorbells (except E8213), and eufy Sensors. It will be compatible with all eufy Security devices by the end of 2022, with the exception of eufy Wired Doorbell.” Taken from this page under the FAQ section:

      Btw, the HomeBase 3 can only be connected by ethernet cable, no WiFi connectivity is available with the HomeBase 3 to your modem.

  4. I’ve just purchased these cameras and seen your review. Any advise on why my cameras aren’t activating for motion? We can walk straight past and nothing, even drive a car out of the camera view and not a thing happens. I’ve contacted EUFY and they’ve advised we need to upload a log but the system won’t even allow that. All sensitivities are set to max!

    • Hey Nicole, sorry to hear that. Since you mentioned that activity won’t register in camera view, then we can probably rule out signal or connectivity issues. Do both of your S330 cameras not register motion? Or only one of them?

      1) When you go into one of the S330 cameras settings, go to Motion Detection and ensure that the Motion Detection switch or toggle is on.
      1A) Ensure that no activity zones are set up just to rule that out.
      1B) Try running the Motion Test Mode to see if anything happens.
      1C) Ensure that all Detection Types are selected with the checkmark

      2) Go into Video settings and ensure that no Privacy Zones are setup.

      3) Go into Notifications and ensure that it is set to “Most Efficient”
      3A) Ensure that on your phone, the Eufy App is allowed to send Notifications/Alerts and make sure to turn off any battery saving or battery optimizer settings for the Eufy App so that it can run in the background unrestricted.

      4) Go into General options and ensure that the Firmware version is fully updated.
      5) Ensure that the cameras are not Snoozed (Moon Icon)

      6) Go into the Homebase 3 Settings and go into Notification and ensure that Ignore Notification is turned off
      6A) Go into General settings and tap on Working Mode and set it to Performance(Beta)
      6B) Go to General Settings -> About Device and ensure the Firmware is up to date as well.
      6C) Tap on AI Empowerment and ensure that all your Eufy cameras are selected in that screen.

      Let me know how it goes.

    • Hi Carsten, this system can only operate with WiFi. The S330 cameras are not able to continue recording, then sync with the HomeBase 3 later when internet is restored.

  5. Hi Adrian

    Thank you for your review. Really enjoyed it.

    What happens if Wi-Fi is disconnected for a period? We have time to time blackout on our Wi-Fi.

    Thank you.

    • Hi Carsten,

      Let me contact Eufy to find out what happens if the WiFi disconnects. Since the S330 cameras sync with the HomeBase 3 to save video clips, I don’t believe the S330 cameras will temporarily save any files locally, then sync with the HomeBase 3, but let me confirm 100% and get back to you.

    • Hi Drake, thank you for checking out my review. I looked at the link you shared and I have an idea of the issue now. Let me reach out to Eufy to find out about this because I am currently away from home right now, but I will get right back to you as soon as I find out. Alternatively, if you find out before me, please let me know too. Thanks!

    • Hi Drake, sorry for the late reply, but the Sync button issue still exists. If someone does also walk away with the camera, the video files are encrypted to prevent them from accessing it, but your video clips will still be deleted with it Sync button is held down.

  6. On the 2c Pro camera I read comments about it not identifying pets at night so setting off unwanted alerts. Is this still the case or have they fixed it on this version?

    • Hi Barry, the AI seems to detect pets pretty easily the majority of the times, even at night. Since you mentioned it, I went back through the last 4 days of video and I’ve only seen two videos where there were pets in the daytime where it only tagged the humans, but not the pets.

  7. Great review thank you so much. May I ask how good the audio quality is on the speakers on the cameras? I have the 2C Pro cameras and the speaker is distorted on all of them rendering them effectively useless to communicate with visitors. I’m just about to return them and this would be an amazing upgrade if the speakers worked 🙂

    Thank you so much



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Adrian is a tech lover that enjoys helping people make the most of their tech in a simplified way.

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