Affiliate link - I may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases; some links go to other retailers with the same arrangement.
Quick verdict
The Shelly 1 Mini Gen3 is the go-to tiny relay for local-first smart homes. It fits behind virtually any switch plate, integrates instantly with Home Assistant via the native Shelly integration, and needs zero cloud. Gen3 brings improved hardware over previous generations. If you want to make dumb switches smart without replacing them, this is the way to do it.
Standout: Tiny Gen3 relay with fully local Shelly integration - hides behind any switch or in any junction box.
Notes last checked Mar 25, 2026.
Compatibility snapshot
Home AssistantexcellentFull local control, no cloud needed. Native Home Assistant integration or a local protocol.
Apple HomeokayWorks, but with limits or extra setup.
Google HomeokayWorks, but with limits or extra setup.
AlexaokayWorks, but with limits or extra setup.
Works offlineyes
Setupadvanced
Extra hub neededno
Powerhardwired
Local control facts
Home Assistant: shelly integration, Local Push, Platinum on the quality scale (home-assistant.io, checked Sep 10, 2026)
Why it stands out
extremely compact - one of the smallest smart relays available
excellent local control via native Shelly Home Assistant integration
versatile - works with lights, fans, garage doors, or any on/off load
Reasons to hesitate
no dimming - on/off relay only
Wi-Fi based, so no Zigbee or Z-Wave mesh benefits
requires basic electrical knowledge for installation
Best for
making any dumb switch smart without replacing the switch itself
Shelly ecosystem users wanting the smallest possible relay
Avoid if
you need dimming capability - look at the Shelly Dimmer instead
you're not comfortable with in-wall wiring
Privacy and local-control notes
Fully local via the native Shelly Home Assistant integration. No cloud account needed. Shelly's local API (HTTP/RPC) provides complete control without any external dependency.
Home Assistant support: supported · integration path: native Shelly (local) or Matter over Wi-Fi (firmware 1.6+).
Buying reality check
Price notes: Very affordable. Available from shelly.com and various retailers.
Top affordable smart home devices for Home Assistant that work locally without cloud dependencies or subscriptions, plus where the radio or hub cost hides.
Matter is what a device speaks; Thread is one network it can speak over. Which to buy in 2026 for a local-first Home Assistant setup, and what to skip.
Which local-first hub is better depends on whether you want maximum flexibility or a more appliance-like smart home experience. Hardware, radios, integrations and performance compared.
