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Shelly i4 Gen3 


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Shelly i4 Gen3 


Wi-Fi-operated 4-digital input controller

With the ability to manage 4 digital inputs, Shelly i4 Gen3 enables you to manually activate or deactivate any created scene, synchronize actions, or execute complex trigger scenarios. Activate different devices and control the lights, shut the blinds, and activate scenes instantly from one location. Compact enough to fit behind most wall switches, the Shelly i4 Gen3 is retrofitted and takes less than 10 minutes to install under any regular 4-button switch.

  • Multi-click - Up to 16 possible actions
  • New processor - ESP-Shelly-C38F chip with an increased memory of 8 MB
  • Improved durability of terminals
  • Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS and custom certificates
  • No HUB required! Easy control through Shelly Smart Control app, various home automation protocols, and platforms
  • *Shelly Plus i4 is an input reader device (it does not contain a relay)


  • Wi-Fi Connectivity: The device can connect to your home Wi-Fi network, allowing you to remotely monitor humidity and temperature data through a smartphone app or other compatible devices.
  • Integration with Smart Home Platforms: You can integrate the Shelly i4 Gen3 with popular smart home platforms, including Google, Alexa, and Samsung SmartThings. This enables voice control and automation capabilities through these platforms.
  • Local and Cloud Control: This can function independently in a local Wi-Fi network and can be operated through cloud home automation services.
  • Bluetooth Connectivity: Bluetooth and BLE gateway are available for inclusion purposes, which may be useful during setup.
  • User-Friendly Interface: The device provides a user-friendly interface with a reset button for manual interactions.
  • Improved Processor and Memory: Upgraded with an improved processor and increased memory for enhanced performance.
  • Embedded Web Interface: Features an embedded web interface for monitoring, controlling, and adjusting settings.
  • Wireless Connectivity: The device supports Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 protocols with specified indoor and outdoor range capabilities.
  • BLE Gateway: Bridge between your Shelly BLU devices and the wider Shelly ecosystem. It receives Bluetooth signals and sends them to the cloud or locally to another non-Bluetooth device.
  • Wi-Fi Range Extender for IoT devices: A Wi-Fi extender is employed to expand the reach of your Wi-Fi network by receiving your current Wi-Fi signal, enhancing its strength, and transmitting the enhanced signal over a wider area.
  • Scripting: https://shelly-api-docs.shelly.cloud/gen2/Scripts/ShellyScriptLanguageFeatures/
  • Wide range of integrations: The device can be integrated with 3rd party home systems, documented HTTP API, MQTT(s), WebHooks over HTTP and HTTPS, UDP
  • Virtual Components: https://shelly-api-docs.shelly.cloud/gen2/DynamicComponents/Virtual/


Main Application 

  • Residential 
  • MDU (Multi-Dwelling Units - Apartments, condominiums, Hotels, etc. )
  • Light commercial ( small office building, small retail/restaurant/gas station, etc. ) 
  • Government/Municipal 
  • University/college. 

For more information see below 
Home Page     Specifications   Buy Shelly i4 Gen3  

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