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eufy FamiLock S3

eufy / T85V01Y1

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eufy FamiLock S3, product photo
Image: eufy

Does the eufy FamiLock S3 work with HomeKit, Alexa, and Google Home?

The eufy FamiLock S3 is a palm vein smart lock with a 150 degree 2K camera and a doorbell, rated BHMA Grade 1.

It works with HomeKit, Google Assistant and Alexa. It suits HomeKit, Google Home, Alexa and Home Assistant users through an integration (the maker's cloud).

At a glance: works withHow this is decided: cited platform facts only
HomeKit
Yes[1]
Wi-Fi cloud, via integration
Google Home
Yes[1]
Wi-Fi cloud, via integration
Alexa
Yes[1]
Wi-Fi cloud, via integration
SmartThings
Unknown
Unknown
Home Assistant
Yes[2][3]
Wi-Fi cloud, via fuatakgun/eufy_security

Key facts

eufy FamiLock S3 facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[1]
List price$349.99[1] as of
TypePalm vein video lock[1]
Unlock methodsPalm vein, app, voice, passcode, key[1]
Power15,000 mAh battery plus 4 AAA, 5 months[1]
MatterMatter[1]
Voice and smart homeHomeKit, Google Home, Alexa[1]

Integration paths

How the eufy FamiLock S3 connects

1 pathHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Wi-Fi cloudeufy Security app, Wi-Fi network[1]unknownunknown
About these columns
Requires
Hardware the path needs beyond the device and a controller.
Local
Yes when control on this path keeps working with the internet down.
Platforms
The platforms that work with the device on this path: Native (out of the box), Via integration (needs an add-on) or Not supported.

Home Assistant and Homey

Ways to add the eufy FamiLock S3

1 routeHow facts are sourced: every cell cites its source below
PlatformLeveliIntegrationDetailsEvidenceLimitations
Home AssistantCommunity[2][3]fuatakgun/eufy_securityWi-Fi cloud
  • Quality: Custom[2][3]
  • IoT class: Cloud Push[2][3]
  • Works with Home Assistant: Not certified[2][3]
Model namedLimited: Custom integration, not part of Home Assistant Core; no longer updated, with a successor project in its place[2][3]
About these columns
Level
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.

Cite this page

eufy FamiLock S3. Smart Home Canon. https://smarthomecanon.com/devices/eufy-familock-s3. Last checked 2026-10-20.

Sources

  1. [1]
    MFReufy.com / FamiLock S3 product page, eufy US store
    Accessed Back to text
  2. [2]
    DBgithub.com / HACS: fuatakgun/eufy_security (Eufy Security custom integration)
    Accessed Back to text
  3. [3]
    MFRbropat.github.io / eufy-security-client: Supported devices
    Accessed Back to text