Shelly I4 GEN3 scene activation mode, WiFi, 4 digital inputs

Shelly i4 Gen3 - Wi-Fi controller with 4 digital inputs

With the ability to manage up to 4 digital inputs, the Shelly i4 Gen3 allows you to manually activate or deactivate any scene you create, synchronise actions or trigger complex scenes. You can control different devices, lights, blinds or scenes with one touch, all from a single point. Compact enough to mount behind a 4-button switch - installs in less than 10 minutes.

• Multi-click: up to 16 possible actions

• New processor: ESP-Shelly-C38F chip with memory expanded to 8 MB

• Improved, more durableterminals

• Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS and custom certificates

• No HUB required! Easy control via the Shelly Smart Control app, various protocols and voice assistants

• ⚠️ Shelly i4 Gen3 is an input reader device - no relay.

🔎 Why choose Shelly i4 Gen3? Full switch control

TheShelly i4 Gen3 is a smart device that lets you control other devices or scenes in your home. Mounted behind a light switch, it gives you instant access to a variety of functions - from setting the mood for a movie night, to turning off all the lights with a single gesture. It can send notifications or commands to other Shelly relays, sensors or even third-party devices (HTTP/MQTT).

⚙️ Main functionalities

• Wi-Fi Operation - Network connection without HUB

• Bluetooth - Quick addition of devices or BLE gateway function

• Multi-click support - Up to 16 different actions for scenes and commands

• Smart scenes - Customised automations based on context

• mjS scripting - Create complex custom functions

• Unified control - In the Shelly Smart Control app

💡 Usage examples

• Easy control from one place - Turn off lights, close blinds and operate the garage door directly from a 4-button switch.

• Activate scenes instantly - Press a button before bedtime and activate the "Night" scene (switch off all lights, lower the blinds, activate the alarm).

• Perfectly compatible with Shelly Wall Switch 4 - Recommended for controlling up to 16 different scenes without modifying your existing installation.

🧠 Advanced Gen3 Series features

• Matter-ready - Upgradeable for Matter support (depending on Matter expansion)

• Dual memory (8MB) - Improved performance, faster operation and new features

• Virtual Components - Also controls non-Shelly devices from the same application

📐 Technical Specifications