Shelly i4 Gen3 - Your smart controller Shelly i4 Gen3 is an intelligent, four-channel Wi-Fi input controller that allows you to activate and operate prepared scenes and synchronize activities in the smart home system. The device is used to transmit control signals to other receivers, allowing you to control other Shelly devices using physical buttons. Thanks to its small size, the Shelly i4 Gen3 fits into a flush-mount box behind a wall switch, allowing you to manually trigger functions without the need for a hub. Performance and technology of the Gen3 series The Gen3 series introduces significant hardware improvements over its predecessor, the Shelly Plus i4. The device is equipped with its own Shelly chip and processes data quickly, which affects the efficiency and effectiveness of the system. Each Gen3 device, including the i4 model, has 8 MB of flash memory, which allows for a stable update process and smooth operation. Shelly i4 Gen3 supports Wi-Fi 4 and Bluetooth 4.2, which facilitates the process of adding the device to the Shelly Smart Control application. Application and manual control Shelly i4 Gen3 is helpful in situations where the user wants to keep a standard wall button while still activating complex scenarios. Thanks to four inputs, the controller can recognize different types of presses (single, double, long), which allows you to assign up to 16 different actions. You can use Shelly i4 Gen3 to control lighting, blinds or other Shelly relays. This function allows you to manually turn off all the lights in your home with one click when leaving, which improves the functionality of the installation. Advanced functions and integration The device supports advanced communication options, such as HTTP and MQTT, which allows integration with external automation systems. Shelly i4 Gen3 supports scripting, giving you the ability to create custom logic rules for sensors or network-controlled devices. Thanks to Bluetooth, the controller can act as a gateway for Shelly BLU devices, expanding the range of the ecosystem. Configuration and activation of new features is done using the mobile application, and the entire installation process usually takes less than 10 minutes. Easy installation and safety Installing the device in an electrical box usually takes less than 10 minutes, which allows you to quickly implement the system in any room. Thanks to its dimensions, Shelly i4 Gen3 fits into standard flush-mounted boxes, facilitating cooperation with shelly relays and other infrastructure elements. The Gen3 series ensures quality, efficiency and effectiveness of work thanks to a built-in temperature sensor that monitors the condition of the device. This solution works stably regardless of the brand of switches you have, which makes it a very universal element of the installation. Technical data Parameter Value Power supply 110 - 240 V AC, 50/60 Hz Number of inputs 4 (SW1, SW2, SW3, SW4) ESP-Shelly-C38F processor Flash memory 8 MB Wi-Fi protocol 802.11 b/g/n (Wi-Fi 4) Bluetooth 4.2 with BLE support Power consumption Less than 1 W Operating temperature -20 °C to 40 °C Dimensions 37 x 42 x 16 mm Key advantages Stable ESP-Shelly-C38F processor ensuring fast response to inputs. Possibility to operate up to 16 different scenes with one device. Functional web interface for direct device management. Support for advanced MQTT protocols and JavaScript scripts. No need for an additional hub for basic operation. Increased memory to 8 MB for future updates and new features. The product is a proposition for users who want to control a smart home using traditional wall switches. Installers looking for efficient solutions for complex triggering scenarios. People building a distributed smart home system based on local Wi-Fi communication. Owners of systems requiring integration via HTTP and MQTT.