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Shelly

Plus i4

A Wi-Fi and Bluetooth scene controller with 4 switch/button inputs that triggers scenes, automations, and webhooks from wired wall switches or buttons. Powered from 110-240 VAC and installs behind existing switches to add smart control without replacing them.

Works on integrations
Protocols
Setup guides
Roles it can fill
Native Shelly integration, local, no cloud required, with optional MQTT. Provides 4 dry switch/button inputs (SW1-SW4) on mains power (110-240 VAC) for triggering scenes, automations, and webhooks; supports scripting and BLE.

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.

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