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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Description

🔐 Unlock the future with a wave of your hand—security that’s smart, sleek, and seriously next-level.

SMART SENSOR ACCURACY - Cut false alarms by 95% with dual PIR & Radar sensors—security that’s smart and reliable.
SEAMLESS SMART HOME SYNC - Effortlessly integrate with Apple Home, Alexa, Google, and Matter for a future-proof connected lifestyle.
UNSTOPPABLE POWER BACKUP - Stay secure with a 15,000mAh rechargeable battery plus 4 AAA backups for over 4 months uptime.
PALM VEIN PRECISION UNLOCK - Experience lightning-fast, forgery-proof access with 0.6s recognition—security redefined.
CRYSTAL CLEAR 2 K HDR SURVEILLANCE - Monitor your doorstep with ultra-wide 150° views and night-friendly HDR clarity.

The eufy FamiLock S3 is a premium ANSI/BHMA Grade 1 smart deadbolt featuring ultra-secure palm vein recognition with 99.9% accuracy and 0.6-second unlock speed. It integrates a 2K HDR camera with a 180° diagonal ultra-wide lens for comprehensive front door monitoring. Powered by a robust 15,000mAh rechargeable battery plus AAA backup batteries, it ensures uninterrupted security for up to 4 months. Advanced PIR and Radar dual sensors minimize false alarms by 95%, while seamless compatibility with Apple HomeKit, Alexa, Google Home, and Matter smart home platforms delivers a privacy-first, future-ready smart lock experience—no monthly fees required.

Specifications

Brand	eufy Security
Special Feature	2K Full HD Head-to-toe View, Auto-Lock, DualPower System, Wave to unlock with Palm, Works with Smart Home Platforms
Lock Type	Deadbolt
Item dimensions L x W x H	3.07 x 1.22 x 7.87 inches
Material	Stainless Steel
Recommended Uses For Product	Securing residential front doors
Style	Palm Vein + Video
Color	Black
Number of Pieces	1
Included Components	Interior Assembly, Rechargeable Battery & AAA Batteries x 4, Exterior Assembly, Physical Keys, Deadbolts & Deadbolts Screws
Controller Type	Apple HomeKit, Amazon Alexa, SmartThings, iOS, Android
Shape	Rectangular
Control Method	App
Connectivity Protocol	Wi-Fi
UPC	194644232672
Model Name	T85V01Y1
Manufacturer	eufy
Part Number	T85V0
Item Weight	5.39 pounds
Product Dimensions	3.07 x 1.22 x 7.87 inches
Item model number	T85V0
Batteries	4 AAA batteries required. (included)
Power Source	Battery Powered
Installation Method	Self-Adhesive
Special Features	2K Full HD Head-to-toe View, Auto-Lock, DualPower System, Wave to unlock with Palm, Works with Smart Home Platforms
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium Ion

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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eufy FamiLock S3 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, Motion Sensor, No Monthly Fee

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