Eufy Cam S4 4K UHD Solar-Powered Outdoor Security Camera - T81721W1

Eufy T81721W1 Cam S4 4K UHD Solar-Powered Outdoor Security Camera

Total Coverage for Your Home
The eufyCam S4 Wireless Outdoor Solar Security Camera delivers the ultimate protection with a cutting-edge triple lens design. The 4K UHD bullet lens captures every critical detail, while the 2K PTZ dual-lens system offers full 360° panning and tilting for panoramic surveillance. Auto-tracking intelligently locks onto people up to 164 feet away, automatically reframing when more than one person enters the scene. Whether monitoring your driveway, entryway, or backyard, this system ensures you never have to worry about blind spots.

SolarPlus™ Power—Worry-Free, Wire-Free
Power your security system effortlessly with SolarPlus™ 2.0. Just an hour of direct sunlight per day keeps your camera running year-round, thanks to the high-efficiency 5.5W solar panel. The flexible, detachable panel makes installation simple on virtually any surface—walls, poles, or eaves—for reliable performance without dependency on batteries or electricians.

Advanced AI & Local Storage with No Monthly Fees
The eufyCam S4 combines smart AI technology for fast, accurate human, vehicle, and pet detection with completely local storage, so your recorded footage stays private. The built-in 32GB storage is expandable up to 256GB—no mandatory subscriptions required. For those looking to upgrade, pairing with the HomeBase S380 unlocks advanced BionicMind™ facial recognition and massive video storage up to 16TB. Stay informed with instant, accurate alerts and keep threats at bay with integrated strobe lights and a powerful 105 dB siren.

Features

• Tri-Lens Tracking with Auto-Framing
  The 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 the outdoor camera with your 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 automatically activates to send intruders packing.

Footnotes:

• *Full product functionality is included with no monthly fee. Optional or premium features may require a subscription. **If you use cloud-based features such as cloud storage or push notifications with thumbnail previews, videos or thumbnail previews will be sent to the cloud.
• ***With optimal sublight, the solar panel can collect and store 1,000 to 2,500mAh per day. The camera uses 300 to 550mAh over a whole day of average use.