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Shelly 1L Gen4

Shelly / S4SW-0A1X1EUL

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Shelly 1L Gen4 relay module, three-quarter view
Image: Shelly press materials

Does the Shelly 1L Gen4 work with HomeKit, Alexa, and Google Home?

The Shelly 1L Gen4 is the Gen4 choice for older light switches, because it needs no neutral wire.

It comes set up for Matter, with Zigbee as the alternative. It suits HomeKit users, with native support through Matter over Wi-Fi. Home Assistant users get native support through Zigbee. Google Home, Alexa and SmartThings users reach it through an integration (the maker's cloud).

At a glance: works withHow this is decided: cited platform facts only
HomeKit
Yes[1]
Matter / Wi-Fi, native
Google Home
Yes[2]
Wi-Fi cloud, via integration
Alexa
Yes[2]
Wi-Fi cloud, via integration
SmartThings
Yes[2]
Wi-Fi cloud, via integration
Home Assistant
Yes[3][4]
Zigbee, native; 1 other path

Key facts

Shelly 1L Gen4 facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[5][6]
GenerationGen4[7]
Model codeS4SW-0A1X1EUL[2]
Power measurementInternal temperature only[2]
Neutral wireNo neutral needed (Shelly Bypass included)[2]
Max load200 W at 240 V~[2]
MountingIn-wall[2]
RadioWi-Fi (802.11 b/g/n), Bluetooth 4.2, Zigbee[2]
MatterBuilt in (default). Zigbee is the alternate profile.[2]
Local APIHTTP API, MQTT and webhooks[2][8]

Integration paths

How the Shelly 1L Gen4 connects

4 pathsHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Matter / Wi-FiMatter controller[2]unknownunknown
ZigbeeHUBZigbee coordinator[2]unknownunknown
Wi-Fi localNothing extra[2][4]Yes[2][4]unknown
Wi-Fi cloudVendor cloud account[2]No[2]unknown
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 Shelly 1L Gen4

3 routesHow facts are sourced: every cell cites its source below
PlatformLeveliIntegrationDetailsEvidenceLimitations
Home AssistantNative (local)[4]shellyWi-Fi local
  • Quality: Platinum[4]
  • IoT class: Local Push[4]
  • Works with Home Assistant: Not certified[4]
Product line namedNone stated
Home AssistantVia Zigbee/Z-Wave[3]zigbee2mqttZigbee
  • Works with Home Assistant: Not certified[3]
Model namedNone stated
HomeyOfficial app (local)[9]cloud.shelly.controlWi-Fi local
  • App: Official[9]
  • Runs on: Homey Pro[9]
Model namedNone stated
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

Shelly 1L Gen4. Smart Home Canon. https://smarthomecanon.com/devices/shelly-1l-gen4. Last checked 2026-10-20.

Sources

  1. [1]
    MFRshelly.com / Shelly Group introduces multiprotocol connectivity at CES 2025 (2025-01-06)
    Accessed Back to text
  2. [2]
    MFRkb.shelly.cloud / Shelly 1L Gen4 - Shelly Knowledge Base
    Accessed Back to text
  3. [3]
    DBzigbee2mqtt.io / Zigbee2MQTT: Shelly S4SW-0A1X1EUL
    Accessed Back to text
  4. [4]
    DOChome-assistant.io / Shelly - Home Assistant
    Accessed Back to text
  5. [5]
    MFRshelly.com / Shelly 1L Gen4 - Shelly Europe shop
    Accessed Back to text
  6. [6]
    MFRshelly.com / Shelly Europe shop catalog (Shopify product feed, pages 1-3)
    Accessed Back to text
  7. [7]
    MFRkb.shelly.cloud / Shelly Gen4 devices - Shelly Knowledge Base
    Accessed Back to text
  8. [8]
    MFRshelly-api-docs.shelly.cloud / Shelly Technical Documentation
    Accessed Back to text
  9. [9]
    DOChomey.app / Homey App Store: Shelly Control
    Accessed Back to text