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, Shelly i4 Gen3 is retrofit 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 relay)

why shelly i4 gen3? 
Full Control at Your Switch

Shelly i4 Gen3 is a smart device that lets you easily control various devices and scenes in your home. When placed behind a switch, you can instantly set the mood for movie night or turn off all the lights in your house from one convenient location. Now even more powerful, it’s equipped with our own Shelly chip and quickly executes commands and sends notifications for various actions. You can use Shelly i4 Gen3 to control other Shelly relays, sensors, or devices controlled via HTTP and MQTT. Compact enough to fit behind any wall switch, Shelly i4 Gen3 can display status and control actions for up to four inputs.

Functionalities
Wi-Fi Operated

Connect Shelly i4 Gen3 to your Wi-Fi network. No HUB required!

Bluetooth

Add devices quickly and easily via Bluetooth connection or use as a Bluetooth gateway.

Wide range of voltage support

Shelly i4 Gen3 can be powered by 110-240 V AC.

Multi-click support

Up to 16 possible actions. Activate any Shelly device and scenes you desire.

Smart scenes

Set custom scenes by combining Shelly i4 Gen3 with your other Shelly devices.

Scripting

Shelly i4 Gen3 fully supports mjS scripting, allowing you to create custom features and functionalities.

Use Cases

Control your devices effortlessly

Shelly i4 Gen3 offers manual control of other Shelly devices. With it, you can easily turn off the lights, close the blinds, and even operate the garage door—all from one convenient spot. Enjoy the comfort of having full control of your home right at your fingertips with 16 different possible actions!

Instantly activate scenes

Forgot to turn off the lights before bed? No need to worry! With Shelly i4 Gen3, you can activate a "Bedtime" scene with a single touch. Turn off all the lights, close the blinds, and activate the security system – all without leaving the comfort of your bed.

Perfect Match

Shelly i4 Gen3 is an ideal companion for the Shelly Wall Switch for Smart Relays, featuring a 4-button design. Each button can trigger up to 4 different actions, allowing one switch to activate and execute up to 16 scenes.

With its compact size and simple wiring, the Shelly Wall Switch for Smart Relays easily fits into any existing switch console. No need to expand the wall space or modify the wiring!

Recommended
Shelly Wall Switch 4

Gen3 Series features

On the Road to Matter

Each Gen3 device is engineered to be upgradable to Matter. The doubled memory, compared to Plus series, guarantees a smooth update process, paving the way for new smart capabilities and integrations.

 *Dependent on the extent of Matter's functionalities support.

More Memory, More Power 

The Gen3 series ensures the quality and reliability of our devices by using our own powerful Shelly chip. Boasting 8MB of memory, this dramatically improves device performance and efficiency. This significant increase in memory not only guarantees smoother and faster operation but also equips the Gen3 series for the introduction of new capabilities.

Unified Control with Virtual Components

The Gen3 Series introduces “virtual components, transforming how you manage and control 3rd party devices. Within the Shelly Smart Control app, you can now create virtual devices, integrating non-Shelly products into a unified control system. This feature provides streamlined control of all your smart devices, regardless of brand, from a single interface.

Smart home control, perfected.

Shelly Smart Control

Shelly Smart Control - one app to control your spaces, energy consumption, and expenses.

Specifications