The Shelly i4 Gen3 is a smart device that lets you easily control various devices and scenes in your home (no relays, inputs only). 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 some wall switches, Shelly i4 Gen3 can display status and control actions for up to four inputs.

Different types of actions, scenarios, and schedules can be set to sync your environment to your daily activities or business needs, via the Shelly smart home ecosystem, including the Shelly Smart Control app - or link it with a popular home automation software such as Home Assistant via a Raspberry Pi!

Shelly i4 Gen3 is an ideal companion for the Shelly Wall Switch 4 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 Wall Switch easily fits into any existing switch console. No need to expand the wall space or modify the wiring!

Note: You may require a neutral wire to use this product. Please research the device and your home wiring (safely, see below) before purchasing.

⚠️Caution - Read Before Buying⚠️

Before beginning the installation, please read this guide and any other documents accompanying the device carefully and completely
Danger of electrocution. The mounting/installation of the device should be performed by a qualified person (electrician)
Failure to follow the installation procedures could lead to malfunction, danger to your health and life, violation of the law or refusal of legal and/or commercial guarantee (if any)
Allterco Robotics (makers of Shelly products) and Mann Enterprises LTD are not responsible for any loss or damage in case of incorrect installation or improper operation of this device due to failure to follow the user and safety instructions in the printed guide accompanying this product (also available in the resources section below)
Do not connect the device to appliances exceeding the given max load.
Use the device only with a power grid and appliances which comply with all applicable regulations. Short circuit in the power grid or any appliance connected to the device may damage the device.
Before starting, wire check that the breakers are turned off and there is no voltage on their terminals. This can be done with a phase meter or multimeter. When you are sure that there is no voltage, you can start wiring the cables.

Features

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
Supports KNXnet / IP communication

Specifications

Size (HxWxD)	37x42x16 / 1.46x1.65x0.63
Weight	19 g / 0.67 oz
Screw terminal max torque	0.4 Nm / 3.5 lbin
Conductor cross-section	0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules)
Conductor stripped length	6 to 7 mm / 0.24 to 0.28 in
Mounting	Wall box
Shell material	Plastic
Shell colour	Orange
Terminal Color	Black
Ambient working temperature	-20 °C to 40 °C / -5 °F to 105 °F
Humidity	30 % to 70 % RH
Max. altitude	2000 m / 6562 ft
Power supply	110 - 240 V⎓, 50/60 Hz
Power consumption	< 1 W
Internal-temperature sensor	Yes
Wi-Fi
Protocol	802.11 b/g/n
RF band	2401 - 2483 МHz
Max. RF power	< 20 dBm
Range	Up to 30 m / 100 ft indoors Up to 50 m / 160 ft outdoors
	(Depends on local conditions)
Bluetooth
Protocol	4.2 with BLE
RF band	2400 - 2483.5 MHz
Max. RF power	< 4 dBm
Range	Up to 10 m / 33 ft indoors Up to 30 m / 100 ft outdoors (Depends on local conditions)
CPU	ESP-Shelly-C38F
Flash	8MB
Webhooks (URL actions)	20 with 5 URLs per hook
Scripting	Yes
MQTT	Yes

Resources

Shelly Product Documentation
Printed User Guide (as found within the package)
Components and APIs
Declaration of Conformity
Device Identification
- Device name: Shelly i4 Gen3
- Device model: S3SN-0024X
- Device SSID: ShellyI4G3-XXXXXXXXXXXX
- BLE Model ID: 0x1812
EAN: 3800235261828

Handy Shelly Resources

Shelly Cloud
Shelly App
- Apple App Store
- Google Play
- Huawei AppGallery
Home Assistant Shelly Integration
Shelly Community Forum
Shelly Facebook Support Group
Shelly Knowledgebase
Shelly Device Finder (easy-to-use software to find Shelly devices in the local network)
Shelly Developer API

Package Contents

1x Shelly i4 Gen3
1x User Guide

Wall switch not included

Home Automation Input Devices

Shelly Wall Switch 4

Shelly BLU Button Tough 1

Shelly BLU Wall Switch 4 - Stand-Alone

Shelly Wall Switch 2

Shelly BLU Button1

Shelly Wall Switch 1

Shelly BLU RC Button 4

Shelly Wave i4 DC

Shelly Wave i4

Shelly i4 Gen3

ThirdReality Zigbee Smart Button