The smallest WiFi action and scenes activation device in the world



No HUB required - Connect Shelly i3 directly to your Wi-Fi at home.

Power supply

110-240 АC and 24-60V DC. Shelly i3 is compatible with all major international voltage standards.

3 AC inputs

Shelly i3 has three inputs for every situation. You can create scenes in the Shelly Cloud app and command them all.

Multi-click support

Up to 24 possible actions. Control the lights, shut the blinds and open the door. Run any Shelly device and scenes you desire.

Control remotely

Control the lighting at home, no matter where you are. No more lights left on and
coming home in darkness.

Highly compatible

Compatible with Android, iOS, Amazon Alexa, Google Assistant, and home automation servers using MQTT, CoAP, and REST API.

Why Shelly i3

Shelly i3 has no relays but is small enough to be installed virtually anywhere and shows the status of 3 inputs. The device is in one of the switches and can command other connected Shelly relays, sensors, or HTTP, MQTT or CoAP controlled devices. Opportunities are endless through discrete commands on the home network or scenes in the cloud.


easy wiring

Multi-actions support

button off
short push
long push
2x short push
3x short push
short + long
long + short

Shelly i3 supports up to 8 different actions per button. They can control different devices directly or through cloud scenes. One-click can turn on/off the light, and two clicks can turn on/off the fan, a long push of the switch button can trigger a whole scene. Possibilities are countless.

Size matters

Shelly i3 is smaller and thinner than a Shelly 1 relay. Thanks to its tiny dimensions, it can fit under any wall switch or tight place. The device can be placed anywhere you want, and its whole power is less than 15.5 sm2.

Ultimate comfort for
good night

1x Click - Bedroom light On/Off
2x Clicks - Turn Off all lights at home
3x Clicks - Blinds are closed

Controlling other Shelly devices has never been easier. Shelly i3 allows for the remote control of other Shellys without your mobile phone. A few clicks and you can easily turn off the lights before bed in the whole house.

Never be late

Blinds, electrical devices, lights, you can control them all by creating complex scenes through the Shelly Cloud app. Now, when you are leaving in a rush, you can turn off all the lights with just one push or simultaneously turn off the lights and drop the blinds in seconds.

Always be notified

The Shelly Cloud app is enough for you to monitor your home no matter where you are. Having Shelly i3 installed, you can check or receive a notification if you have forgotten any switch on (forgotten lights). Now you will never worry about your electricity bills again.

Complex scenes control

Manually activate or deactivate any created scene. With Shelly i3 you can run synchronized actions of several Shelly devices. With just one push you can have the lighting in your whole house turned on/off. All you need to have is Shelly i3 and other Shelly devices installed.


One application countless possibilities

With the best cloud service in the world, user-friendly interface, scenes, bulk control, and much more, the Shelly Cloud application allows you to control your home from anywhere. Each Shelly can be integrated and works with all other Shelly devices in the Shelly app.


For Developers

Shelly i3 comes with a programming/debug header which can be used to flash alternative firmware on the device. It has an ESP8266 inside, with 4MB flash chip. A USB-to-UART adapter is needed as well as a reliable 3.3V with at least 350 mA drive capability.

Device pinout ›

Visit our REST API for developers ›