{"id":3957,"date":"2026-02-21T08:00:18","date_gmt":"2026-02-21T07:00:18","guid":{"rendered":"https:\/\/www.senses.se\/en\/review-eufy-eufycam-s4\/"},"modified":"2026-03-21T18:16:24","modified_gmt":"2026-03-21T17:16:24","slug":"review-eufy-eufycam-s4","status":"publish","type":"post","link":"https:\/\/www.senses.se\/en\/review-eufy-eufycam-s4\/","title":{"rendered":"Review: Eufy Eufycam S4"},"content":{"rendered":"\n

We tested and were very impressed by the EufyCam S3 Pro<\/a> just over a year ago, giving it a full 9 out of 10. Now Eufy has released the successor, EufyCam S4<\/strong>, which takes the concept several steps further. Three lenses in a single camera, motorized PTZ that follows movements automatically, a more powerful solar panel, and all without any subscription requirements. <\/p>\n\n\n\n

It sounds almost too good to be true, so the question is whether it really delivers on its promises. We\u2019re going to find out!<\/p>\n\n\n\n

Design and first impressions<\/strong><\/h2>\n\n\n\n
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A substantial piece of hardware. Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

As soon as we unbox the eufyCam S4, we are struck by its size. It is significantly larger and heavier than the S3 Pro, weighing a full 745 grams for the camera alone. Add the 308-gram solar panel, and it becomes a substantial piece of equipment to mount on a wall. It is large, heavy, and feels incredibly robust. This is not a discreet little camera you hide under the eaves, but a camera that truly stands out. <\/p>\n\n\n\n

But on the other hand, it\u2019s meant to be seen. A large, visible security camera has a deterrent effect in itself. The build quality is excellent; it feels solid and weather-resistant. The included mount is stable with security screws, and the battery is easy to remove via USB-C for charging.<\/p>\n\n\n\n

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Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

The camera comes with a separate 5.5 W solar panel that can be mounted on top of the camera. It\u2019s clever that the panel is detachable. If the camera is in the shade, you can use a cable to move the panel to a sunnier spot. Eufy claims that one hour of direct sunlight is enough to power the camera for an entire day. <\/p>\n\n\n\n

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Convenient with a removable battery. Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

The camera also features a replaceable 10,000 mAh battery, which is unusual in this class and a big plus for longevity.<\/p>\n\n\n\n

Installation<\/h2>\n\n\n\n

Installation takes place via the Eufy Security app, and unlike some of its siblings in the S-series, the S4 works perfectly well on its own. This means you don\u2019t need a HomeBase 3 to get started, which is a major advantage for those who just want to buy a standalone camera. However, if you already have a HomeBase 3 (S380), you just need to press the sync button to include it in the ecosystem and gain access to extra storage and more advanced AI.<\/p>\n\n\n\n

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Frustrating issues with the installation.<\/figcaption><\/figure>\n\n\n\n

During installation, we had quite a few problems getting the camera to detect the built-in storage, and we had to restart several times and upgrade the firmware before it worked. Hopefully, this was just a temporary glitch, but it was very annoying in an otherwise very smooth installation process.<\/p>\n\n\n\n

You are guided step by step, and when it works, it only takes a few minutes for the camera to be up and running. The included mount is stable, which is necessary given the weight. However, keep the placement in mind, as the camera needs a clear line of sight for both the fixed lens and the moving part.<\/p>\n\n\n\n

Tri-Cam technology and features<\/strong><\/h2>\n\n\n\n
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Photo: Senses.se<\/figcaption><\/figure>\n\n\n\n

What makes the S4 unique is that it combines three lenses into one device. At the top is a fixed 4K camera with a 130-degree wide angle that keeps a constant eye on the big picture. Below it sits a motorized PTZ module with two 2K lenses that can pan and tilt 360 degrees.<\/p>\n\n\n\n

In practice, it works by having the fixed 4K camera act as a scout. When it detects movement, it sends the coordinates to the PTZ section, which quickly turns, zooms in, and follows the object. Eufy calls this “AI Tracking 2.0.” It works surprisingly well. The transition when the PTZ camera takes over is mostly seamless, and thanks to the fixed lens, you avoid the problem of the camera looking the wrong way when something happens at the other end of the garden.<\/p>\n\n\n\n

Image quality<\/h2>\n\n\n\n
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