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eufy - eufyCam S4 Triple Lens Wireless Solar Security Camera with 360° View, Auto Tracking, No Monthly Fees - White

Model: T81721W1
SKU: 6644014
Sold byBest Buy

Customers are saying

Customers love the exceptional video quality and reliable tracking performance of this camera. Users also frequently highlight the ease of installation, long-lasting battery life, and effective AI-guided features as major strengths. While the device offers impressive coverage and motion detection, some users have noted that its physical size makes it less discreet than other options.

Generated by AI based on customer reviews.

Highlights

Features
  • testTri-Lens Tracking with Auto-Framing

    testThe fixed bullet lens never misses the big picture, while the PTZ dual lenses instantly locks and zooms on visitors or unwanted guests up to 164 ft, showcasing critical details. When multiple people enter, the camera automatically reframes so everyone stays in view—delivering coverage without blind spots.

  • Year-Round SolarPlus™ Power

    Just one hour of direct sunlight a day keeps eufyCam S4 powered thanks to a 5.5 W high-efficiency solar panel.† The SolarPlus™ 2.0 detachable design, praised in reviews for flexibility, makes installation easy on walls, poles, or eaves.

  • Smart and Self-Sufficient

    Works right out of the box—no HomeBase S380 required. On-device AI provides fast, reliable human, vehicle, and pet detection. Built-in 32GB storage is expandable up to 256GB, keeping recordings local and private.

  • Even Smarter with HomeBase S380

    Unlock additional camera functions if you want to pair outdoor camera with you existing HomeBase S380. Innovative BionicMind™ AI recognizes familiar faces and alerts you to strangers; it also detects and alerts you to people, vehicles, and pets detected. Enjoy large-scale capacity for all your video storage and data with expandable storage up to 16 TB for extra peace of mind.

  • Accurate Alerts, Strong Deterrence

    Dual radar + passive infrared (PIR) sensors cut false alarms more accurately over single-sensor systems. When a threat is confirmed, red/blue strobe lights flash and a 105 dB siren activates automatically to send intruders packing.

See all features
Specifications
  • Video Camera Resolution
    4K (2160p)
    Field Of View
    130 degrees
    Night Vision
    Yes
    Number Of Cameras Included
    1
    Camera Power Source
    Battery-powered, Solar powered
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Reviews

Customers are sayingCustomers love the exceptional video quality and reliable tracking performance of this camera. Users also frequently highlight the ease of installation, long-lasting battery life, and effective AI-guided features as major strengths. While the device offers impressive coverage and motion detection, some users have noted that its physical size makes it less discreet than other options.
This summary was generated by AI based on customer reviews.
  • Video Quality (44)
  • Tracking Performance (30)
  • Setup Ease (13)
  • Battery Life (11)
  • AI Performance (7)
  • Size (4)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Great Camera!

    This camera completely surprised us the clarity the sound the ability to move in a areas that I don't typically see behind the camera... the solar Works fantastic the battery's always charged as long as you do what you're supposed to on the settings you never have to worry about plugging it into the electricity it can just be on the solar.. the Sound is amazing! I can even scare animals away if they come up in my yard it's so clear they hear me from several feet away! Thinking of buying another one for the back yard!

    Posted by JamesorangelM

  • Rated 5 out of 5 stars

    Zoom and clarity you need to protect youself.

    Thank you Eufy for this product. I have a neighbor who cantinues to make threats and is borderine stalking us. The detail and clarity of the video is absolutley incredible. With a tracking cam it has made it difficult for my neighbor to come on my property without being seen. One on each side of the house was all we needed and their nonsense has stopped. The fact that it leaves the main camera facing forward and then individually tracks people with the tracking Cam makes all the difference. Low light. No light it makes no differece. It sees everything.

    Posted by Coopman711

  • Rated 5 out of 5 stars

    Best outdoor security cameras yet!

    2 amazing cameras in one awesome unit, and one of the cameras is fully capable of tracking moving objects with zoom features and all! Please upgrade your "flood light" model with this same dual camera and you can take my money!! Only flaw I'd mention is the absolutely pi$$ poor wall mounting screws they provide... They most be made of aluminum foil because they strip faster then a collage drop-out at her second job. For the love of God either upgrade them or don't provide them at all as it's a pain in the neck when it's time to move cameras to new locations. I added a pic of garbage screw lol

    Posted by Four

  • Rated 5 out of 5 stars

    Best security camera for the price!

    It’s an amazing security camera, my favorite feature is the AI with the auto zoom. The best part NO SUBSCRIPTION!! Best night vision and because it has two cameras you can always see what’s going on even if the other camera zooms in.

    Posted by Felipe

  • Rated 5 out of 5 stars

    Solar Powered 360° Protection

    eufyCam S4 Triple Lens it's kind of become one of those gadgets I forget even exists in a good way. It's just sitting there, and it's just doing its business, and then only pops into my life when something needs to be informed or i wish to see the live feed.Right out of the box, the camera is sturdy and well made not flimsy or cheap. The triple lens set up looks a bit futuristic compared to your normal one lens cameras, but it's not weird or ugly. The solar panel that comes with this is nicely integrated as well, which doesn't appear to look like you bolted a random science project to your walls. Setup is very straightforward, Download eufy Security app.  Scan the QR code on the camera.  Connect it to Wi-Fi.  Mount it where you want it. The only "hard" part was where to put it so the solar panel can get good sun, and the camera has a view. Once I chose a location for it, it was a matter of installing it which just included a couple screws and small angle fixes. Power and solar performance One of the primary factors driving my choice of this camera were the combo wireless plus solar. I really didn't want to be running cables around walls or remembered to wriggle the camera down to the recharge it every few months. At least to date the solar panel has done exactly what it's supposed to do. The battery essentially remains full despite having a fair amount of motion. On sunny days, I can actually literally watch the battery percentage go up in the app. On cloudy or rainy days it might dip a little but the battery is big enough it's never come close to dying.If you live somewhere super dark and gloomy for half the year it may be different with you, but under more normal conditions it's pretty much Set it and Forget it. Video Quality and Triple lens coverage The triple lens set-up is the main achievement here. Rather than using one lens that attempts to do everything, the S4 makes use of multiple lenses to cover a greater area to keep things sharp. You get all this wide field of view -almost a 360 degree field of view due to the way you use that.  Way fewer blind spots. I have this one camera that I can see my driveway, front walk, part of my yard, and from this one camera.  It can change lenses/focal lengths to keep people and cars clear when they walk about. Daytime video looks great sharp, clear and normal looking colors. Zooming in on a person or a license plate actually is useful, At night, it still holds up well especially if you've got some ambient light, like a porch or street light. It's miles better than these cheap cameras where everything becomes just a blob of grey color. 360deg view and auto-tracking The combo of a near 360 degree coverage AND auto-tracking though, is where the smartness instead of the gimmick is found.When a person walks on the property, the camera locks on his or her person and moves completely around them.  Right so, if a car pulls into the driveway, it's then tracking it and it ends up focused right where the driver gets out which is where you want to be for video.  In the app, you can swipe around the live view in the same way as a PTZ camera if you are inclined to manually look around, but most of the time the auto-tracking does it. It's not perfect - if there are several people, or cars for that matter, appearing at the center simultaneously, it's going to choose one to follow and may miss the others but for one person, or vehicle, it's a pretty good job. You are also able to dial up the sensitivity or dial it down to make sure that the surveillance device is not freaked out every time a tree branch moves. Motion detection and alerts Motion detection is one of those things which you don't really appreciate until you live with the camera for a few days. The S4 does a nice job here. It can distinguish between people and random motion and it often recognizes vehicles as well.  You can set up activity zones, and so it's not the car that drives by on the street every second bugging you.  Sensitivity is adjustable, which is helpful in reducing false alarms due to shadows, bugs or plants. Person detection has worked for me. I get a ping when somebody walks up to the door, walks up through the driveway, but I'm not getting that every time there's a bird flying past. Notifications are pretty quick usually within a couple of seconds so if someone rings the doorbell I can tap the notification and I will still see them there live. Experience in the App and Local storage The eufy Security application is in a good place right now. It's clean and easy to navigate and the important stuff is not buried under a million menus. Timeline view: Scroll through your day and tap on any one of the events so that you can watch it immediately.  Filters: Quickly change "person", "vehicle" or "all motion" to learn more about what it is that you are interested in.  Live view controls - controls to pan, tilt and zoom as well as turn auto-tracking on and off at any time.  Notifications: Change tones to suit your preferences, eliminate noise during quiet hours as well as choose which nots you really want. One of the thing i like is local storage and no forced subscription. Eufy allows you to store clips locally (either built-in storage or hub) instead of forcing you into a monthly cloud storage just to have access to your own footage. If your fed up with all your devices asking for a subscription this is a breath of fresh air. Privacy and security With any security camera there is always that tipping point between security and privacy. Eufy is quite heavy handed when it comes to local storage and encryption, so it does not feel like you are just streaming your life into some random cloud forever. If privacy is a big issue, you'll still want to give the rules a read, but day to day, it does feel more private than the cloud-only brands. What I'm really into: Super wide covering with triple-lens and near 360 degree view.  Auto-tracking which is useful, not just for bragging points on the box  Solar power, so you almost have never to think about charging.  Good quality of the video in day and night.  Local storage, no needs for subscription  Smart motion detection and person vehicle recognition and activity zones.  Clean up app with fast and reliable notifications. What could be better: You do require a sensible amount of sunlight if you are hoping for the battery to both remain fully topped up (especially in busy areas).  Auto-tracking may get lost on a subject with much going on.  The camera is larger than the basic single lens ones  so you do have to be a little strategic if you want it to keep a low profile. The eufyCam S4 Triple Lens Wireless Solar Security Camera is what you can feel like a legit upgrade from basic cams. You get smarter coverage, better tracking, good video and quantified close to no hassle with power or subscriptions. It's not the cheapest thing out there and it's not perfect but it hits a really nice sweet spot between performance, convenience and long term cost. If you are looking for a camera that covers a wide area, follows movement intelligently, and for the most part just minding its own business in the background, the S4 is an easy one to recommend. After a week or two, it is no longer as if it is a gadget, but part of the house and that is exactly what you want from a security camera.

From the Manufacturer

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Pros for eufy - eufyCam S4 Triple Lens Wireless Solar Security Camera with 360° View, Auto Tracking, No Monthly Fees - White
Battery Life, Video Quality, Tracking Performance, Setup Ease, AI PerformanceThere were no pros for this productOverall Performance, Battery Life, Camera Quality, Ease of use, Solar PanelOverall Performance, Installation Ease, Motion Detection, Power Source
Cons for eufy - eufyCam S4 Triple Lens Wireless Solar Security Camera with 360° View, Auto Tracking, No Monthly Fees - White
SizeThere were no cons for this productConnectivity, App Performance, Customer SupportThere were no cons for this product

Specs

Questions & Answers
  • Do you need a data plan for this camera?

    No, you do not need a cellular data plan. The eufyCam S4 connects to your home Wi-Fi network for remote viewing and alerts. It does not have a SIM slot or require any monthly service fees. All you need is a stable 2.4 GHz Wi-Fi network (and internet connection for remote access). If you don't have Wi-Fi at the camera location, you'd need a Wi-Fi extender or a separate Wi-Fi solution—but no data plan is required.

    Answered by Eufy Team
    Eufy Team response
  • Can I mount this camera on a pole on my roof?

    The eufyCam S4 comes with a wall-mounting bracket designed for flat surfaces, not for pole mounting. However, you can mount it on a pole using a third-party pole mount or universal security camera mount (e.g., a U-bracket or an adjustable pole mount) that fits the camera's screw hole (typically 1/4-inch or standard tripod thread). The camera is weatherproof and solar-powered, so it will work on a roof pole as long as it has good sunlight exposure. Just ensure the solar panel is oriented correctly for charging.

    Answered by Eufy Team
    Eufy Team response
  • What is the video resolution of this camera?

    The video resolution of this camera is 4K (2160p).

    This question and answer was generated by AI based on customer and product data.
  • Does this camera have night vision?

    Yes, this camera has night vision with a distance of 50 feet.

    This question and answer was generated by AI based on customer and product data.
  • Is this camera compatible with Alexa?

    Yes, this camera works with Amazon Alexa.

    This question and answer was generated by AI based on customer and product data.
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