Name: Shelly i4 Gen3
Brand: Shelly
Price: 12.99 GBP
Availability: InStock

Shelly i4 Gen3

£12.99 - £12.99

£12.99

£12.99 - £12.99

£12.99

Availability:

in stock, ready to be shipped

Quantity

Shelly i4 Gen3 is a Wi-Fi-operated 4-digital-input controller designed for triggering scenes, automations, and complex actions without switching a load. It allows standard wall switches or buttons to control Shelly devices, HTTP/MQTT endpoints, and automation platforms, making it ideal for advanced control logic behind existing switches.

Powered by the Gen3 Shelly ESP processor (ESP-Shelly-C38F) with 8 MB memory, Shelly i4 Gen3 delivers fast response times, improved reliability, and expanded integration support, while fitting neatly behind standard wall switches or control panels.

Key Features

4 digital inputs for scene and automation triggering
Supports up to 16 actions via multi-click (short, long, double, etc.)
Wi-Fi operated – no hub required
Gen3 ESP processor (ESP-Shelly-C38F) with 8 MB memory
Immediate execution of actions and notifications
Works with Shelly relays, sensors, scenes, and third-party systems
Supports scripting (mJS), webhooks, MQTT, WebSocket, HTTPS, UDP, TLS
Acts as a Wi-Fi range extender and Bluetooth gateway
Bluetooth for fast onboarding and device inclusion
Supports KNXnet/IP communication
Compatible with Shelly Smart Control app, Home Assistant, Alexa, and other platforms

Use Cases

Smart Wall Switch Scene Controller

Use existing switches or push-buttons to trigger scenes, automations, or device groups without rewiring circuits.

Automation Trigger Interface

Send commands to HTTP, MQTT, or automation systems based on button presses and multi-click actions.

Multi-Control Panel

Create advanced wall-mounted control panels for lighting scenes, blinds, heating, or smart home routines.

What’s Included

Shelly i4 Gen3
Quick start guide

Technical Specifications

Power

Power Supply: 110–240 V AC ±10%, 50/60 Hz

Device Power Consumption: < 1 W

Inputs & Control

Channels: 4 digital inputs

Multi-Click Support: Up to 16 possible actions

Custom Scripts (mJS): Yes

Device Temperature Protection: Yes

Connectivity

Wi-Fi Protocol: 802.11 b/g/n (2.4 GHz)

Wi-Fi Radio Signal Power: 1 mW

Wi-Fi Range: Up to 50 m outdoors, up to 30 m indoors

Bluetooth: Yes

Bluetooth Protocol: 4.2

Bluetooth Range: Up to 30 m outdoors, up to 10 m indoors

Environmental

Operating Temperature: −20 °C to 40 °C

Physical

Dimensions: 37 × 42 × 16 mm