Eufy FamiLock S3 Max

Unlock with a Wave — Palm Vein Security Meets a 2K Video Doorbell

The eufy FamiLock S3 Max reinvents your front door with palm vein recognition — infrared sensors read the unique vein pattern beneath your skin, a biometric that can't be copied, forged, or worn away by age or skin condition. Recognition happens in under 0.1 seconds with 99.99999% accuracy, so the door unlocks even as you walk up, and a 158.5° wide-angle lens with 360° adaptive detection reads hands of any size (6–30 cm) from any angle, even in 100,000 lux direct sunlight.

It's also a full video doorbell: a built-in 2K HDR camera covers 180° of your doorstep with 16GB of built-in storage, while the 4-inch 1080p interior display gives you instant live view from inside. Dual motion sensors with AI loitering detection cut false alarms by up to 95%, and real-time video calls plus remote unlocking are handled from the app.

Power comes from a PowerDuo™ system — a 15,000mAh rechargeable battery backed by 4 AAA batteries — for up to 5 months per charge. ANSI/BHMA Grade 1 certification (the highest residential rating) and IP65 weather resistance keep it secure outdoors, and it integrates with Apple Home, Alexa, Google Home, SmartThings, and Matter.

Key Features

• Palm Vein Unlocking: Contactless infrared biometrics that can't be replicated — 99.99999% accuracy in under 0.1 seconds
• 2K HDR Video Doorbell: Built-in camera with 180° coverage and 16GB local storage, no monthly fees
• 4-Inch Interior Display: 1080p live view indoors for instant visitor identification
• PowerDuo™ Battery: 15,000mAh + 4× AAA for up to 5 months of use per charge
• AI Security System: Dual motion sensors and loitering detection reduce false alarms by up to 95%
• Multiple Unlock Methods: Palm vein, app, voice control, passcode, or physical key
• Smart Home Ready: Apple Home, Alexa, Google Home, SmartThings, and Matter support
• Built to Last: ANSI/BHMA Grade 1 certified with IP65 weather resistance

Specifications

• Model: E85V0TY1
• Unlock Methods: Palm vein, app, voice control, password, physical keys
• Camera: 2K HDR video doorbell, 180° field of view
• Storage: 16GB built-in
• Display: 4-inch 1080p interior screen
• Battery: 15,000mAh rechargeable + 4× AAA (PowerDuo™), up to 5 months
• Charging: 5V/2A
• Connectivity: Built-in Wi-Fi (direct), no hub required
• Ecosystems: Matter, Apple Home, Alexa, Google Home, SmartThings; eufy Doorbell/Cam/HomeBase 3
• Auto Lock: Door sensor based
• Weather Resistance: IP65
• Certification: ANSI/BHMA Grade 1