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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🔐 Secure smarter, live freer with eufy FamiLock S3 Max

SLEEK COMPACT - Modern light gray design fits perfectly in any professional or home setting without bulk.
EFFORTLESS POWER - Comes with rechargeable lithium-ion batteries for reliable, long-lasting performance.
NEXT LEVEL SECURITY - Auto-lock feature ensures your space is always protected without lifting a finger.
VISUAL VERIFICATION - Built-in video screen lets you see who’s at your door before unlocking—because trust but verify.
READY OUT OF THE BOX - Includes everything you need—lock, batteries, and easy setup for instant peace of mind.

The eufy FamiLock S3 Max is a cutting-edge video lock featuring an auto-lock mechanism, integrated video screen for real-time visitor verification, and rechargeable lithium-ion batteries. Designed with a sleek light gray finish and compact dimensions, it offers professional-grade security with effortless installation and reliable power, making it the ultimate smart lock for modern homes and offices.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Manufacturer	eufy
Part number	T85V0
Item Weight	1.04 Kilograms
Product Dimensions	7.8 x 3.1 x 19.99 cm; 1.04 kg
Batteries	4 AAA batteries required. (included)
Item model number	E85V0
Color	Light Gray
Style	Video Lock With Screen
Item Package Quantity	1
Number Of Pieces	1
Special Features	Auto-Lock
Included components	Lock
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium Ion

eufy FamiLock S3 Max

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