Through its official eufy Amazon storefront, Anker is offering returning Prime Day pricing for Prime members on its FamiLock S3 Max Matter Smart Lock to $279.99 shipped, which matches the price we’re seeing direct from the brand’s website. Normally going for $400 at full price, most of the discounts we’ve seen in 2026 have dropped the costs between $350 and $300, with some occasional falls lower to $280, including during Prime Day last week. That pricing is returning here, giving you a $120 markdown to the all-time lowest price we have tracked. You can save a bit more by going with the standard FamiLock E34 Matter Smart Lock at $229.99 shipped (also matching directly), or you can find many more of the brand’s smart security device deals in the official Amazon storefront here.
If you’re looking for a more advanced means to update your home security, this Anker eufy FamiLock S3 Max is a top pick for both all the entry methods it gives you, but also because installation is DIY-friendly that the brand promises to “fit standard US and Canadian doors.” Not only will you gain entry into your home via a traditional key, a PIN code, in-app unlocking, palm vein recognition, or with voice commands through Alexa or Google Assistant, but you’ll also have 2K HD video feeds on both your phone or the integrated screen before you ever open it.
Of course, there’s also Matter support here that streamlines controls across all the popular ecosystems like Apple Home, SmartThings, and more, as well as a 10,000mAh battery alongside a non-removable 750mAh backup battery that pair together for up to eight months of runtime before needing to recharge.
You’ll find even more smart security device deals like this over in our smart home hub, like the Anker eufy Video Doorbell E340 that is back down at its $100 2026 low, just as it was during Prime Day.
Anker eufy FamiLock S3 Max Matter Smart Lock features:
- Palm Vein Unlocking: Advanced Security with 99.9% Accuracy. Achieve recognition in just 0.6 seconds with cutting-edge, forgery-proof palm vein recognition. This next-gen security feature relies on the unique vein patterns in your palm, ensuring top-tier protection. Plus, your palm vein data is stored securely on the device, keeping your privacy intact.
- This all-in-one device: A 2K HD camera with an f/1.6 lens for sharp, clear visibility—even at night. A video doorbell with a 150° Head-to-Toe wide-angle view that eliminates blind spots, perfect for monitoring packages or checking on visitors. A smart lock with real-time visitor alerts. Whether it’s ensuring your family’s safety or giving peace of mind when older people or children are home alone, the FamiLock S3 Max keeps you connected and reassured.
- The Rear Lock Video Screen: The Rear Lock Video Screen allows you to effortlessly check the front door status anytime, without needing a smartphone app. Its simple, intuitive design makes it ideal for the elderly and children, offering a quick and hassle-free way to see who’s at the door. Perfect for households seeking an easy-to-use, app-free solution for monitoring the front entrance.
- Dual Power Supply System: Stay powered with a rechargeable battery offering up to 4 months of full functionality, plus an emergency set of 4 AAA batteries for an extra month of essential functionality in case of power outages.
- Seamless Home Automation with Matter & Apple Home: Easily integrate with the eufy Ecosystem & HomeBase 3 for advanced AI security features. Supports Matter for smooth, secure connections with Apple Home, Google Home, Alexa, and SmartThings—giving you a privacy-first, future-ready smart home experience. [Note: Camera streams are not supported via Matter due to current limitations. For full features and the best experience, please use the eufy App.] Matter is now compatible with HomeBase 3 for simultaneous use. This video lock is not compatible with HomeBase 2.
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