Shelly 1 Gen 4 - Smart Relay Switch

Shelly 1 Gen 4 is a compact smart switch with potential-free contacts, allowing remote control of electrical appliances via a mobile phone, tablet, PC, or home automation system. It can operate standalone within a local Wi-Fi network or integrate seamlessly with cloud-based home automation services.

With multi-protocol support, including Wi-Fi, Bluetooth, and Zigbee, the Shelly 1 Gen4 ensures a secure connection and flexible smart home integration. The device is also Matter-compatible, providing seamless interoperability with various ecosystems.

Key Features

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  Wi-Fi Connectivity: Connects to your home Wi-Fi network, allowing remote control and automation.

  
  



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  Smart Home Integration: Compatible with Google Assistant, Amazon Alexa, and Samsung SmartThings for voice control.

  
  



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  Standalone or Cloud Control: Operates independently within a local network or through cloud services.

  
  



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  Bluetooth & Zigbee Support: Enables easy setup and extended connectivity.

  
  



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  Potential-Free Contacts: Suitable for switching low-voltage devices.

  
  



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  Embedded Web Interface: Manage settings, monitor, and control directly from a web browser.

  
  



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  BLE Gateway: Acts as a bridge between Shelly BLU devices and the wider Shelly ecosystem.

  
  



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  Wi-Fi & Zigbee Range Extender: Expands network reach for better IoT connectivity.

  
  



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  Advanced Scripting & Automation: Supports HTTP API, MQTT(s), WebHooks, UDP, and KNX net/IP.

  
  



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  Scheduling & Virtual Components: Allows execution of complex automation scenarios.

  
  



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  Overheating Protection: Ensures safe operation under load.

  
  

Use Cases

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  Remote Appliance Control: Turn appliances on/off remotely.

  
  



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  Home Automation: Automate power appliances for convenience and energy efficiency.

  
  



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  Smart Building Integration: Suitable for residential, commercial, and municipal applications.

  
  

Technical Specifications

Physical

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  Size: 37x42x16 mm

  
  



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  Weight: 26g

  
  



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  Mounting: Wall console

  
  



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  Material: Plastic (Blue casing, Grey terminals)

  
  

Electrical

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  Power Supply:

  
  
  
  
  
  
  
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    110-240V AC

    
    
  
  
  
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    24-48V DC

    
    
  
  
  
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    12V DC

    
    
  
  
  
  
  



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  Power Consumption: <1W

  
  



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  Max Switching Voltage: 240V AC / 30V DC

  
  



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  Max Switching Current: 16A (AC) / 10A (DC)

  
  

Connectivity

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

  
  



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  Bluetooth: 5.0

  
  



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  Zigbee: 802.15.4 (Repeater included)

  
  



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  Range:

  
  
  
  
  
  
  
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    Wi-Fi: Up to 30m (indoor) / 50m (outdoor)

    
    
  
  
  
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    Bluetooth: Up to 10m (indoor) / 30m (outdoor)

    
    
  
  
  
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    Zigbee: Up to 100m (indoor) / 300m (outdoor)

    
    
  
  
  
  
  

User Interface & Controls

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  One Control Button:

  
  
  
  
  
  
  
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    Press & hold (5s) - Enable Bluetooth/AP mode

    
    
  
  
  
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    Press & hold (10s) - Factory reset

    
    
  
  
  
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    Press (5 times) - Switch between Matter & Zigbee mode

    
    
  
  
  
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    Press (3 times) - Zigbee inclusion mode

    
    
  
  
  
  
  



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  LED Indications: Wi-Fi/Bluetooth status, Cloud connection, OTA updates

  
  

Firmware & Automation

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  Scripting Support: Advanced automation via Shelly Script Language

  
  



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  Schedules & Webhooks: 20 schedules & 20 webhooks (5 URLs per hook)

  
  



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  MQTT & HTTP API: Supported for custom integrations

  
  

Package Includes

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  1x Shelly 1 Gen4

  
  



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  1x User Manual