Eufy Smart Lock With 2K Doorbell Hits Record Low at $280

The Eufy FamiLock S3 Max is on sale

The Eufy FamiLock S3 Max smart lock is on sale for $279.98 at Amazon. That’s a $120 discount from its $399.99 list price, which price trackers list as its lowest price to date.

The device is a three-in-one gadget, combining a deadbolt, a 2K video doorbell, and a small indoor monitor. PCMag gave it an “excellent” rating and named it the best smart lock of 2025.

What you get for the price

This is a premium buy, but it consolidates multiple devices into one setup. You avoid installing separate hardware and juggling multiple apps.

The exterior panel houses the core features:

• A 2K HDR camera with a 180-degree field of view.
• Infrared night vision.
• A backlit keypad and a palm vein scanner for biometric access.
• Support for physical keys, passcodes, a mobile app, and voice control via Amazon Alexa, Apple HomeKit, or Google Assistant.

The interior unit includes a four-inch 1080p screen that shows a live feed from the doorbell camera, effectively replacing a peephole.

Power, installation, and smart home features

The lock is powered by a 15,000mAh rechargeable battery rated for up to five months, with four AA batteries as a backup. It fits standard doors, though the hardware is larger than many standalone smart locks.

For smart home integration, it supports the cross-platform Matter standard. This prevents you from being locked into a single ecosystem. However, it does not support IFTTT, which limits more niche automations.

Video is stored locally on 15.5GB of built-in memory, avoiding monthly subscription fees. Storage can be expanded up to 16TB using Eufy’s HomeBase 3, which is sold separately.

Is the S3 Max worth it?

The Eufy FamiLock S3 Max is for buyers who want a streamlined, all-in-one security solution for their front door. The sale price makes the premium more palatable for a device that eliminates the need for separate purchases and installations.

You’re paying for the convenience of consolidation and local storage. If your priority is a unified system with a solid camera and multiple access methods, this deal is a strong option.