What kind of doors are eufy FamiLock S3 Max compatible with?

Compatible with most standard doors, door thickness:35-55 mm. Do not recommend to install on the door that has a storm door in front, which might block the view. If your latch recess is round, contact eufy Support to get a round drive-in faceplate.

Which eufy devices and systems are eufy FamiLock S3 Max compatible with?

It supports connection with Homebase 3 and it is not compatible with HB2. Without Homebase, it links to other eufy cameras, letting you remotely lock/unlock via live view on any device.

Does eufy FamiLock S3 Max support external integration with other smart home platforms?

It supports the Matter protocol. Through Matter, you can work with Apple Home to integrate into the Apple ecosystem. Currently, it cannot be connected to HB3 and external ecosystem gateways simultaneously.

What should be noted when using the palm vein unlocking function?

You can store palm vein information for 50 family members. The palm vein can only be used to unlock, not to lock.

What is the power supply method of this door lock? What happens if the battery runs out?

Our door lock uses a dual power supply with lithium and standard batteries. When the lithium battery is low, standard batteries provide emergency power, allowing PIN code access to lock/unlock, while other functions are unavailable.

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🔐 Unlock the future of home security with a touch of your palm!

PALM VEIN PRECISION UNLOCK - Unlock your door in 0.1s with ultra-secure, anti-counterfeit biometric tech.
RELIABLE DUAL POWER SYSTEM - Enjoy up to 4 months of uninterrupted use with rechargeable batteries plus emergency AAA backup.
CRYSTAL CLEAR 2 K HDR VISION - Monitor visitors day or night with a 150° wide-angle video doorbell camera.
INSTANT REAR LOCK VIDEO SCREEN - Check your front door status anytime—no smartphone needed, perfect for all ages.
SMART ALERTS SEAMLESS CONNECTIVITY - Stay connected with real-time visitor notifications via the eufy app.

The eufy FamiLock S3 Max is a cutting-edge smart lock featuring ultra-secure palm vein recognition with 99.9999% accuracy, a 2K HDR wide-angle video doorbell camera for crystal-clear monitoring, and a convenient rear lock video screen for app-free access. Designed with a dual power system combining rechargeable and AAA batteries, it ensures continuous security and peace of mind for modern homes.

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Brand	eufy Security
Model Number	E85V0
Product Dimensions	7.8 x 3.1 x 19.99 cm; 1.04 kg
Color	Black
Name List for Name Plates	Palm Vein + Video + Rear Screen
Material	Aluminum
Quantity	1
Laser Class	2K Full HD Head-to-View, Dual Power System, PIR+ Radar Motion Detection, Wave to unlock at palm, Works with Smart Home Platform
Included Components	4 x Rechargeable Battery & AAA Batteries, Deadbolt & Deadbolt Screws, Exterior assembly, Internal assembly, Physical Key
Are Batteries Included	Yes
Battery Type	Lithium Ion
Item Weight	1.04 Kilograms

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

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