eufy FamiLock S3 Max Smart Lock – Palm Vein Recognition, 2K Camera & Doorbell

Overview

Meet the eufy FamiLock S3 Max—a single, 3-in-1 smart lock that blends palm vein recognition, a 2K HDR camera, and a video doorbell for front-door security. Designed for modern homes, it offers keyless entry, real-time alerts, and clear visibility at the door, day or night.

Performance focuses on practical use: fast recognition, privacy-conscious design, and seamless smart-home compatibility. The palm vein system delivers rapid access with a high level of confidence, while data stays on the device so you remain in control of your information.

Key benefits at a glance

• Palm Vein Unlocking: 99.9% accuracy with recognition in about 0.6 seconds; palm data stored on the device to preserve privacy.
• 2K HDR camera and night vision: sharp, detailed video that helps you verify visitors or packages after dark.
• 150-degree video doorbell view: broad coverage from head to toe to minimize blind spots at the entrance.
• Rear lock video screen: easy front-door status checks without pulling out a phone, ideal for all ages.
• Real-time visitor alerts: stay informed about entries and activity as it happens.

Power, connectivity, and smart-home goodness

• Dual power supply: rechargeable battery up to 4 months of full functionality, plus an emergency set of 4 AAA batteries for an extra month during outages.
• Matter and Apple Home integration: smooth, private connections within the eufy ecosystem and broader support for Apple Home, Google Home, Alexa, and SmartThings via HomeBase 3.

Note: Camera streams are not supported through Matter; for the full feature set, use the eufy App. This video lock does not work with HomeBase 2. As a practical, privacy-first solution, it aims to simplify front-door routines while expanding your security options.

Who is this for?

Ideal for households that value quick access, family safety, and simple, app-assisted monitoring. It’s especially convenient when children, elderly family members, or busy households want a straightforward way to see who is at the door and to grant entry without keys or codes.