What kind of doors are eufy FamiLock S3 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 compatible with?

It supports connection with Homebase 3 and it is not compatible with HB2. With Homebase, it links to other eufy cameras, letting you remotely lock/unlock via live view on any device.

Does eufy FamiLock S3 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. eufy is on standby for a beta solution.

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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eufy Security Smart Lock FamiLock S3 with Palm Vein Recognition

Product ID: 741154086

Details

Brand
eufy Security
Item dimensions L x W x H
7.8 x 3.1 x 20
Lock type
Deadbolt
Recommended uses for product
Securing front

📸2K HD ultra-wide camera

🔋4 months battery + backup power

🖐️99.99999% palm vein accuracy

Description

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

UNSTOPPABLE POWER BACKUP - Stay secure for months with a 15,000mAh rechargeable battery plus AAA backup.
NEXT GEN PALM VEIN SECURITY - Unlock your door in 0.1s with forgery-proof biometric precision.
SEAMLESS SMART HOME INTEGRATION - Effortlessly connect with Apple Home, Alexa, Google, and Matter for a future-ready ecosystem.
CRYSTAL CLEAR 2 K HD SURVEILLANCE - Monitor visitors and packages with ultra-wide 150° coverage and HDR clarity.
SMART DETECTION ZERO FALSE ALARMS - Dual PIR & Radar sensors cut false alerts by 95%, blending security with convenience.

The eufy FamiLock S3 is a cutting-edge ANSI/BHMA Grade 1 smart deadbolt featuring ultra-fast, 99.99999% accurate palm vein recognition, a 2K HD wide-angle camera with HDR, and dual PIR & Radar sensors to minimize false alarms. Powered by a robust 15,000mAh rechargeable battery with AAA backup, it ensures uninterrupted security. Fully compatible with major smart home platforms including Apple HomeKit, Alexa, Google Home, and Matter, it offers seamless, privacy-first keyless entry and advanced home automation.

Specifications

ASIN	B0DTHVNNXQ
ASIN	B0DTHVNNXQ
Additional Features	2K Full HD Head-to-toe View, Auto-Lock, Dual Power System, Unlock with Palm, Works with Smart Home Platforms
Batteries	4 AAA batteries required. (included)
Best Sellers Rank	#7,816 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #377 in Deadbolts
Brand Name	eufy Security
Color	Light Gray
Connectivity Protocol	Wi-Fi
Control Method	App
Controller Type	Apple HomeKit, Amazon Alexa, SmartThings, iOS, Android
Customer Reviews	4.1 4.1 out of 5 stars (296)
Customer reviews	4.1 4.1 out of 5 stars (296)
Date First Available	24 June 2025
Included Components	Lock
Item Dimensions	7.8 x 3.1 x 20 centimeters
Item Highlight	Wi-Fi Deadbolt+2K HDR Doorbell Camera, BHMA Grade 1, Keyless Entry Door Lock for Front Door, 16GB Storage, No Monthly Fee
Item Weight	2.45 Kilograms
Item model number	T85V0
Lock Type	Deadbolt
Manufacturer	eufy
Manufacturer	eufy
Manufacturer Part Number	T85V0
Model Name	T85V01Y1
Model Number	T85V0
Number of Items	1
Number of Packs	1
Number of Pieces	1
Product Dimensions	7.8 x 3.1 x 19.99 cm; 2.45 kg
Recommended Uses For Product	Securing residential front doors
Shape	Rectangular
Style Name	Palm Vein + Video
UPC	194644232672
Unit Count	1.0 Count

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