Shelly 1L Gen3 single channel relay module

Shelly 1L Gen3 is a compact, Wi-Fi smart relay that offers an ideal solution for upgrading and automating lighting systems where there is no neutral conductor in the wall socket, only a phase conductor. This is particularly useful in older buildings where traditional smart relays are difficult to install. Shelly 1L Gen3 allows remote control of lights, setting schedules and creating automation scenarios without the need for a neutral conductor.

The device is easy and quick to install, usually taking only about 10 minutes. The Shelly 1L Gen3 is designed to fit behind standard wall switches or in other tight spaces, making it ideal for upgrading existing installations. With built-in Wi-Fi and Bluetooth connectivity, it integrates easily into existing smart home systems, allowing remote access and control.

About Shelly

Shelly is a brand of Shelly (formerly Allterco Robotics), a European company known worldwide for its innovative and reliable smart home solutions. The modular design and open integration possibilities make Shelly products popular among DIY enthusiasts and professional installers alike.

Main product features:

• Perfect for upgrading existing systems! A neutral guide is not necessary. Lights or other devices can be powered and controlled using only the phase lead, without connection to the neutral.
• Supported load types:
  Classic light bulbs
  LED lighting
  *For light sources without the use of a step-down transformer (for low-voltage lighting).
• Minimum bulb wattage: A Bypass 1L/2L Gen3 unit shall be installed next to the LED bulbs to handle bulbs above 5W. Not required for conventional incandescent bulbs.
• Wi-Fi connection: Shelly 1L Gen3 connects to your home Wi-Fi network and allows remote control via the Shelly mobile app or other smart home platforms.
• Remote control: With the Shelly app and an internet connection, you can control the device from anywhere with your smartphone or tablet.
• Voice control: If it's connected to voice assistants like Amazon Alexa or Google Assistant, you can also control it with voice commands.
• Timetables and automation: Shelly 1L Gen3 supports schedules and automations, allowing you to create routine tasks and set timers, e.g. automatically switching on lights at a certain time.
• Compatibility: Designed and tested for different types of lamps. Operates in the 220-240 VAC voltage range.
• Compact design: The Shelly 1L Gen3 is small, so it can easily be installed behind wall switches or in junction boxes without taking up much space.
• Protection: Built-in temperature sensor for overheating protection.
• Local and remote access: The devices can be controlled locally on the same Wi-Fi network or remotely when you're not home.
• OTA updates: Shelly devices regularly receive over-the-air software updates that add new features and improve safety.
• Compatibility with smart home systems
• Shelly 1L Gen3 is compatible with various smart home systems such as MQTT, Home Assistant and others, allowing flexible use.
• New features compared to the previous Shelly 1L: All the new features of the latest Shelly devices:
  • Scripting
  • HTTPS and MQTTS support
  • Support for WebSocket input and output connections

Smart home protocols and platform compatibility

• Supported protocols: Wi-Fi (802.11 b/g/n), Bluetooth 4.2
• Bluetooth Gateway function: Receives and transmits signals from Shelly BLE devices (remote controls and sensors)
• Native platform: Shelly Smart Control app (Android, iOS)
• Cloud integrations: Amazon Alexa, Google Assistant
• Third platforms: Home Assistant, OpenHAB, Domoticz, ioBroker, Node-RED, MQTT, REST API, Webhook, HTTPS, UDP
• Voice control: Supports Amazon Alexa and Google Assistant

Smart features

• Remote on/off
• Remote status enquiry
• Setting schedules and automations: up to 20 timers in the device memory
• Create scenes with other Shelly devices
• Local and cloud operation
• Support for firmware updates
• Bluetooth Gateway function for BLE devices: control via Shelly Bluetooth remotes and wireless Bluetooth wall switches

Electrical properties

• Power supply: 220-240V AC, 50/60Hz
• Maximum load: 200W (at output O1) at 240V AC
• Input for switch: 2 inputs, compatible with up to 2 push-button or conventional switches. Not compatible with intermediate or cross switches.
• Voltage independent switch (dry contact): Not supported
• Measuring energy: Not supported
• Automatic switch-off/on function: Supported by

Other characteristics

• Size: Compact design to fit standard wall switches
• Installation: Easy and quick installation in the wall
• Requires a Bypass Unit: Shelly Bypass 1L/2L Gen3 required
• DIY compatibility: Open API and support for MQTT, ideal for DIY projects