LogoBuyChoice
  • Features
  • Pricing
  • Products
  • Blog
  1. Home
  2. Products
  3. Security
  4. eufy
eufy FamiLock S3 Max Smart Lock with Palm Vein Recognition - Keyless Entry Door Lock for Front Door, 3-in-1 Wi-Fi Keypad Deadbolt+ 2K HDR Camera+ Doorbell, ANSI/BHMA Grade 1, Rear Lock Video Screen
eufy

eufy FamiLock S3 Max Smart Lock with Palm Vein Recognition - Keyless Entry Door Lock for Front Door, 3-in-1 Wi-Fi Keypad Deadbolt+ 2K HDR Camera+ Doorbell, ANSI/BHMA Grade 1, Rear Lock Video Screen

4.3(231 reviews)
mid range$150-$299500+ bought in past month
wifi
Wi-Fi
smart
Smart
control
Gesture, Remote, Touch, Voice
material
Aluminum
lock type
Biometric, Deadbolt, Video Door Lock, Video Doorbell
resolution
2K
connectivity
Wi-Fi
special feature
2K Full HD Head-to-toe View, DualPower System, PIR+Radar Motion Detect, Wave to unlock with Palm, Works with Smart Home Platforms

Want the best price and purchase timing?

Our AI advisor analyzes real-time pricing across all channels to find you the best deal.

AI Verdict

A 3-in-1 Wi-Fi keypad deadbolt with 2K HDR camera, doorbell, and 0.6-second palm vein recognition, rated ANSI/BHMA Grade 1 for integrated security.

Strong Fit

This lock is a strong fit for users wanting a comprehensive, high-security smart door solution, combining a deadbolt, 2K camera, and doorbell with advanced palm vein recognition. Its ANSI/BHMA Grade 1 rating and local biometric data storage cater to security-conscious individuals, while the rear video screen simplifies access for all family members.

If 4K camera resolution is a priority, look for smart locks that explicitly list 4K sensor specifications.

Regret Score™

Low Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

21/100
vs. 376 Security we've analyzedSafer than 94%
Hidden Defects
14/35

Issues discovered after purchase

Achilles' Heel
0/25

Critically weak dimension

Expectation Gap
1/20

Amazon rating vs actual quality

Fit Risk
6/20

Chance this product isn't for you

BuyChoice Score
4.3

Pros

  • Palm vein recognition achieves 99.9% accuracy in 0.6 seconds, storing data on-device for privacy.
  • Integrated 2K HD camera with f/1.6 lens and 150° head-to-toe wide-angle view provides clear visibility and package monitoring.
  • Dual power system offers up to 4 months from a rechargeable battery, plus an extra month from 4 AAA backup batteries.
  • Rear Lock Video Screen allows door status checks without a smartphone, simplifying use for children and elderly.
  • Supports Matter, Apple Home, Google Home, Alexa, and SmartThings for broad smart home integration.
  • Operates without monthly fees for core functionality, unlike some competitors.

Cons

  • Camera resolution is 2K, not 4K, which some users desired for higher detail.
  • Matter integration does not support camera streams, requiring the eufy App for full camera features.
  • Palm vein and camera functions are disabled when operating on backup AAA batteries, requiring password entry.
  • Requires a clean palm for optimal vein recognition, especially in wet or snowy conditions.
  • Door thickness compatibility is limited to 35-55 mm.

Dimension Scores

Detection Accuracy9/10

Palm vein recognition offers 99.9% accuracy with 0.6-second recognition and is ANSI/BHMA Grade 1 certified for security.

Connectivity & Range8/10

Features Wi-Fi connectivity and broad compatibility with Matter, Apple Home, Google Home, Alexa, and SmartThings.

App & Integration7/10

Integrates with major smart home platforms, but camera streams are not supported through Matter, limiting full functionality to the eufy App.

Build & Weather Resistance8/10

Constructed from aluminum, rated ANSI/BHMA Grade 1, and boasts an IP65 rating with operation from -22°F to 158°F.

Best For

  • Families seeking a high-security, integrated entry solution with multiple access methods.
  • Households with children or elderly members who benefit from a simple, app-free internal video screen.
  • Users prioritizing local data storage for biometric information and no monthly fees for security features.
  • Smart home enthusiasts with existing eufy, Apple Home, Google Home, or Alexa ecosystems.

Not Recommended For

  • Users who require 4K video resolution for their front door camera.
  • Homes with door thicknesses outside the 35-55 mm range.
  • Individuals who rely exclusively on Matter for all smart home camera streaming and control.

Watch Out For

  • Palm vein recognition may require a clean palm for optimal function in rainy or snowy weather.
  • Camera streams are not supported via Matter, meaning you'll need the eufy App for live camera viewing and full features.
  • When running on the emergency AAA batteries, palm vein and camera functions are disabled, forcing a password unlock.
  • The lock is compatible with door thicknesses between 35-55 mm; thicker or thinner doors will not fit.

Full Specifications

UPC194644232658
ASINB0DTHMFMKP
Brandeufy
ColorBlack
ShapeRectangular
StylePalm Vein + Video + Rear Screen
MaterialAluminum
Batteries4 AAA batteries required.
Lock TypeBiometric, Deadbolt, Video Door Lock, Video Doorbell
Model NameE85V0JY1
Item Weight0.704 ounces
Part NumberT85V0
Manufacturereufy
Control MethodGesture, Remote, Touch, Voice
Controller TypeAmazon Alexa, Android, Apple HomeKit, SmartThings, iOS
Special Feature2K Full HD Head-to-toe View, DualPower System, PIR+Radar Motion Detect, Wave to unlock with Palm, Works with Smart Home Platforms
Number of Pieces1
Special Features2K Full HD Head-to-toe View, DualPower System, PIR+Radar Motion Detect, Wave to unlock with Palm, Works with Smart Home Platforms
Battery Cell TypeLithium Ion
Item model numberT85V0
Product Dimensions3.07 x 1.22 x 7.87 inches
Batteries Included?No
Batteries Required?Yes
Included ComponentsDeadbolts & Deadbolts Screws, Exterior Assembly, Interior Assembly, Physical Keys, Rechargeable Battery & AAA Batteries x 4
Connectivity ProtocolWi-Fi
Item Package Quantity1
Item dimensions L x W x H3.07 x 1.22 x 7.87 inches
Recommended Uses For ProductFront Door, Home use

What Buyers Say

Users are consistently impressed by the 3-in-1 integration of a smart lock, 2K camera, and doorbell, highlighting its ability to simplify home security by consolidating devices. The palm vein recognition is frequently cited as a standout feature, offering quick and secure keyless entry that feels futuristic. Many appreciate the convenience of the internal video screen, especially for family members who don't use smartphones. The absence of monthly fees for essential features is also a recurring positive point.

“Dude, this palm vein thing is legit! My kids can get in without fumbling with keys, and I can see who's there on the screen inside, no phone needed. Worth it just for that convenience alone.”

Common Praise

  • Palm vein recognition is fast, accurate, and feels like something from a sci-fi movie.
  • The 2K camera provides a 150° head-to-toe view, clearly showing packages and visitors.
  • No monthly subscription fees for video storage or core features.
  • The dual power system with a 4-month rechargeable battery and AAA backup offers peace of mind.
  • The rear lock video screen is convenient for quickly checking who's at the door without a phone.
  • The lock's heavy-duty construction and ANSI/BHMA Grade 1 rating instill confidence in its security.

Common Complaints

  • Some users expressed a desire for a 4K camera resolution instead of 2K.
  • The Matter integration does not support camera streaming, requiring the eufy app for live video.
  • Palm vein recognition can be affected by wet or dirty hands, requiring a clean palm for consistent use.
  • When on backup AAA power, palm vein and camera features are unavailable, limiting unlock options to passwords.

Ownership Tips

  • The palm vein recognition works consistently even for children and seniors, making it genuinely family-friendly.
  • The dual battery system means you rarely worry about being locked out, as there's always a backup.
  • The internal screen is surprisingly useful for quick checks, especially when you're not near your phone.
  • Setup through the eufy app is straightforward, even with the advanced features.
  • The physical key access is discreetly placed but accessible, a good failsafe.

Frequently Asked Questions

Does the eufy FamiLock S3 Max require a monthly subscription?

No, the eufy FamiLock S3 Max does not require a monthly fee for its core functionalities, including video recording and storage.

How long does the battery last?

The rechargeable battery provides up to 4 months of use, with an additional month of essential functionality from the 4 AAA backup batteries.

Can I view the camera feed on my smart home hub?

While the lock supports Matter, Apple Home, Google Home, and Alexa, camera streams are not currently supported via Matter. You'll need the eufy App for full camera features.

What happens if the battery dies completely?

The lock includes a dual power system with a rechargeable battery and 4 AAA emergency backup batteries. There's also a physical key access point for manual unlocking.

Is the palm vein recognition reliable for everyone?

The palm vein recognition boasts 99.9% accuracy and is designed to work for various hand sizes and conditions, including for children and seniors.

Buying Guide

When you're looking at smart locks, think about how you actually want to get into your house. Do you want to use your phone, a code, or something more advanced like your palm? Also, consider if you need a camera and doorbell built right in, or if you already have those. Security ratings like ANSI/BHMA Grade 1 tell you how tough the lock is against forced entry.

Palm Vein Recognition

This is like a super secure fingerprint scanner for your hand. It reads the unique pattern of veins in your palm, which is much harder to fake than a fingerprint, giving you a very fast and private way to unlock your door.

2K HDR Camera with 150° Head-to-Toe View

This isn't just a peephole; it's a wide-angle lens that lets you see everything from someone's hat to their shoes, and even packages left on your doorstep. HDR helps balance bright sunlight and dark shadows for a clearer picture, like your phone's camera does.

ANSI/BHMA Grade 1

This is a rating for how strong and durable a lock is. Grade 1 is the highest residential security rating, meaning it's built to withstand a lot more force and wear than lower-grade locks, like a heavy-duty safe compared to a basic lockbox.

Dual Power System

Imagine your phone having a backup battery that automatically kicks in when the main one dies. That's what this is for your lock. A long-lasting rechargeable battery handles daily use, and if it runs low, standard AAA batteries take over, so you're never unexpectedly locked out.

Alternatives

If this lock doesn't fit, look for models with 4K camera resolution if video detail is paramount, or consider separate smart lock and doorbell camera units if you prefer modularity or have specific door thickness requirements.

You Might Also Like

Ring Wired Doorbell Elite (newest model), Native Power over Ethernet, Retinal 4K video, Remote Gate Access, 10x Enhanced Zoom, and Low-Light Sight
Strong Fit
Ring

Ring Wired Doorbell Elite (newest model), Native Power over Ethernet, Retinal 4K video, Remote Gate Access, 10x Enhanced Zoom, and Low-Light Sight

$300-$599
4K

A 4K PoE doorbell with 10x zoom and remote gate control, built for properties needing robust, wired security and advanced motion detection.

Blink Doorbell Mount, 2nd Gen Anti-Theft Blink Doorbell Camera Mount No Drilling with Rain Cover, Fit for Blink Video Doorbell 1st & 2nd Gen, No Block Sensor & Night Vision
Situational
Satisure

Blink Doorbell Mount, 2nd Gen Anti-Theft Blink Doorbell Camera Mount No Drilling with Rain Cover, Fit for Blink Video Doorbell 1st & 2nd Gen, No Block Sensor & Night Vision

$0-$49

This is a no-drilling, anti-theft mount with a rain cover designed for Blink Video Doorbells (1st and 2nd Gen) on inward-opening doors 0.8-1.9 inches thick.

Ring Chime Pro
Amazon's ChoiceSituational
Ring

Ring Chime Pro

4.6
(57K)
$50-$99
wifi

A plug-in chime and Wi-Fi extender for Ring devices, it provides audible alerts and a limited 2000 sq. ft. signal boost for Ring cameras and doorbells.

Ring Video Wired Doorbell (newest model), Home or business security, Two-Way Talk, advanced motion detection, HD camera and real-time alerts to monitor your front door (wiring required)
Amazon's ChoiceStrong Fit
Ring

Ring Video Wired Doorbell (newest model), Home or business security, Two-Way Talk, advanced motion detection, HD camera and real-time alerts to monitor your front door (wiring required)

4.4
(79K)
$0-$49
1080p

This 1080p wired doorbell delivers real-time alerts and two-way talk for front door monitoring, requiring existing wiring.

LogoBuyChoice

Avoid bad products before you buy. Real data. Zero bias.

GitHubX (Twitter)BlueskyYouTube
Built withLogo of MkSaaSMkSaaS
Product
  • Features
  • Pricing
  • FAQ
Resources
  • Blog
  • Changelog
  • Roadmap
Company
  • About
  • Contact
  • Waitlist
Legal
  • Cookie Policy
  • Privacy Policy
  • Terms of Service
© 2026 BuyChoice. All Rights Reserved.