RELAY UNIT SHELLY 1 GEN3

Shelly 1 Gen3 is a WiFi-controlled single-channel 16A relay with a potential-free contact set. It is designed to be installed behind a switch, socket, or light fixture, enabling easy control and automation of lights, garage door, irrigation system, bathroom fan, and virtually all electrical devices. Thanks to its compact design, it fits into most wall and ceiling boxes. Shelly 1 Gen3 is easy to install and control via the Shelly Smart Control app or your preferred smart home or smart building system. Shelly devices operate 100% locally and require only a local network to function. Shelly can be used independently via the Shelly Smart Control app or integrated with over 200 partner systems such as Google Home, Amazon Alexa, Home Assistant, Samsung SmartThings, Athom Homey, and many others. Features

Shelly 1 Gen3 offers multiple use cases. It can be powered by 12V DC, 24-48V DC, or 110-230V AC. Thanks to the potential-free contact set, the device can be powered by low voltage while simultaneously switching a 230V device via the relay—or vice versa.

The device has one switch input, which is optional and fully programmable. This makes Shelly 1 Gen3 suitable for a wide range of applications, such as:

• Light control
• Bathroom fan control
• Floor heating control (e.g., together with Shelly Plus Add-On and DS18B20 temperature sensor)
• Garage door control (e.g., together with Shelly Plus Add-On and magnetic contact)
• Irrigation system control
• SG-Ready heat pump control
• Smart doorbell control

Works locally – no cloud required

All Shelly WiFi devices feature a built-in web server, meaning you get extensive functionality that always works, regardless of whether you have an active internet connection. No cloud connection is required, so you can start with just one Shelly device. Thanks to the built-in web server, Shelly has built-in memory and remembers sunrise, sunset, schedules, and more—even if the network goes down. Relays and dimmers function like standard wall switches, so you can use them with regular switches—even without internet. All inputs and outputs are fully programmable and require only a local Wi-Fi network to communicate between devices. However, we recommend keeping an active internet connection, as it unlocks additional features.

Connections

Shelly 1 Gen3 can connect to the internet or a local network via 2.4 GHz Wi-Fi. Additionally, the device has built-in Bluetooth, like other Pro and Plus devices, allowing it to serve as a bridge for Shelly Bluetooth battery-powered Bluetooth devices.

All Shelly devices operate locally without requiring a connection to Shelly Cloud, but activating it is recommended to enhance data storage and functionality. Devices can also communicate via MQTT, HTTP, and WebSocket. All support TLS.

Hardware

The device features third-generation hardware, including the powerful ESP-Shelly-C38F CPU with 8MB flash memory. This makes Shelly 1 Gen3 future-proof and enables scripting and virtual devices for advanced and user-specific functions.

This product description is an automated translation of the original Finnish description.