The Eufy FamiLock S3 Max Is Over $100 Off Right Now

THE Eufy FamiLock S3 Max is a deadbolt, a 2K video doorbelland a small indoor monitor in one device. Right now it costs $279.98 on Amazon, down from $399.99, which price trackers listing as its lowest price to date.

PCMag gave it an “excellent” rating and named it the best smart lock of 2025 (for more options check out this summary). While that context helps justify the cost, it’s still a premium purchase: you’re paying for convenience and consolidation. Instead of installing a separate lock, doorbell camera, and interior display, this consolidates all three into one setup with local storage.

In practice, this means fewer gadgets on your doorstep and fewer apps to juggle. The exterior panel of this IP65-note smart lock houses a 2K HDR camera with a wide 180-degree view, so packets left at the edge of the frame are less likely to be cut off. At night, infrared intervenes automatically. The keyboard stays dark until you press it, then lights up bright enough to use, and the palm vein scanner works quickly and consistently, making it more convenient than fingerprint readers, which can struggle in bad weather. If you prefer traditional access, you can always resort to a physical key, password, the mobile app or voice control via Amazon Alexa, Apple HomeKit or Google Assistant.

Additionally, there’s a four-inch 1080p screen on the indoor unit that displays a live view of anyone outside, essentially replacing a peephole. This is useful in homes that have never had one, or for anyone who prefers not to pull out their phone every time the bell rings. Power comes from a 15,000mAh rechargeable battery that lasts up to five months, with four AA batteries as backup. It fits standard doors and installs like a typical smart lock, although the hardware is larger than most. As for its integrations and storage, it supports Matterthe cross-platform standard for the smart home, so you’re not locked into a single ecosystem. That said, it doesn’t support IFTTT, which limits niche automations. Video is stored locally on 15.5 GB of onboard memory, avoiding monthly fees, and it can be expanded up to 16 TB via Eufy. HomeBase 3 (sold separately).