Shelly i4 Gen3 is a Wi-Fi input module that turns up to four wired buttons or switches into scene and automation triggers without controlling a load itself.
Setup guides
Roles it can fill
Reads four switch or button inputs and reports short, long, and multi-press events, so existing wall switches become scene controllers. It switches no load of its own. The native Shelly integration gives local control with no cloud required, plus Bluetooth and MQTT support.
Events and automation triggers
Presses on this device reach Home Assistant as device triggers through
the
Shelly
integration, which you pick in the automation editor after pairing.
The button list, and whether each button also becomes an
event
entity, comes from what the device reports at pairing time, so it
appears once the device is on the network.
Read from Home Assistant 2026.8.3: the integration declares these trigger types, and core holds no per-model button list for this device.
Where to buy
Recipes using this device
No recipes reference this device yet.