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Shelly 1 Gen3

Shelly 1 Gen3.jpg

Device identification

  • Device name: Shelly 1 Gen3

  • Device model: S3SW-001X16EU

  • Device SSID: Shelly1G3-XXXXXXXXXXXX

  • BLE Model ID: 0x1018

Short description

Shelly 1 Gen3 is a small form factor smart switch with potential-free contacts, which allows remote control of electric appliances through a mobile phone, tablet, PC, or home automation system. It can work standalone in a local Wi-Fi network or it can also be operated through cloud home automation services. The device also has improved processor and increased memory compared to its predecessor.

Shelly 1 Gen3 can be accessed, controlled and monitored remotely from any place where the User has internet connectivity, as long as the device is connected to a Wi-Fi router and the Internet.

It can be retrofitted into standard electrical wall boxes, behind power sockets and light switches or other places with limited space.

Shelly 1 Gen3 has embedded Web Interface which can be used to monitor and control the device, as well as adjust its settings.

Main features

  • Wi-Fi Connectivity: The device can connect to your home Wi-Fi network, allowing you to remotely monitor humidity and temperature data through a smartphone app or other compatible devices.

  • Integration with Smart Home Platforms: You can integrate the Shelly 1 Gen3 with popular smart home platforms, including Google, Alexa, and Samsung SmartThings. This enables voice control and automation capabilities through these platforms.

  • Local and Cloud Control: Can function independently in a local Wi-Fi network and can also be operated through cloud home automation services.

  • Bluetooth Connectivity: Bluetooth and BLE gateway are available for inclusion purposes, which may be useful during the setup process.

  • User-Friendly Interface: The device provides a user-friendly interface with a reset button for manual interactions.

  • Improved Processor and Memory: Upgraded with an improved processor and increased memory for enhanced performance.

  • Embedded Web Interface: Features an embedded web interface for monitoring, control, and adjustment of settings.

  • Wireless Connectivity: The device supports Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 protocols with specified indoor and outdoor range capabilities.

  • Dry Contact: Allows switching on and off of lower voltage devices.

  • BLE Gateway: Bridge between your Shelly BLU devices and the wider Shelly ecosystem. It receives Bluetooth signals and sends them to the cloud or locally to another non-bluetooth device.

  • Wi-Fi Range extender for IoT devices: A Wi-Fi extender is employed to expand the reach of your Wi-Fi network by receiving your current Wi-Fi signal, enhancing its strength, and then transmitting the enhanced signal over a wider area.

  • Scripting:

  • Wide range of integrations: The device can be integrated with 3rd party home systems, documented HTTP API, MQTT(s), Web Hooks over HTTP and HTTPS, UDP

  • Schedules: Allows scheduling of complex operations to be executed in predefined time window. Users can specify time windows based on date, time of day, weekdays, hours, minutes and seconds.

  • Virtual Components:

Use cases

  • Remote Appliance Control: Turn on or off electric appliances remotely using your mobile phone, tablet, PC, or home automation system.

  • Internet-Connected Convenience: Access аnd control devices from anywhere with internet connectivity, as long as the Shelly 1 Gen3 is connected to a Wi-Fi router. 

  • Home Automation: Shelly 1 Gen3 enables automatic control of power appliances for more relaxing and enjoyable experience.

Main applications

  • Residential

  • MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)

  • Light commercial (small office buildings, small retail/restaurant/gas station, etc.)

  • Government/municipal

  • University/college


Amazon Alexa supported capabilities


Google Smart Home supported traits


Samsung SmartThings supported capabilities


Simplified internal schematics

Shelly Plus 1 internal schematics

Device electrical interfaces


  • 1 switch/button input on screw terminal

  • 1 potential-free contacts relay input on screw terminal

  • 2 power supply inputs on screw terminals: N and L


  • 1 potential-free contacts relay output on screw terminal


  • Wi-Fi

  • Ethernet

  • Bluetooth

Safety function

  • Overheating protection

Supported load types

  • Resistive (incandescent bulbs, heating appliances)

  • Capacitive (capacitor banks, electronic equipment, motor starting capacitors)

  • Inductive with RC Snubber (LED light drivers, transformers, fans, refrigerators, air-conditioners, washing machines, tumble dryers)

User interface


  • One (Control) button

    • Press and hold for 5 seconds to enable Device access point and Bluetooth connection.

    • Press and hold for 10 seconds to factory reset the Device.


  • LED (monocolor) indication

    • AP (Access Point) enabled and Wi-Fi disabled:
      1 second ON / 1 second OFF

    • Wi-Fi enabled, but not connected to a Wi-Fi network:
      1 second ON / 3 seconds OFF

    • Connected to a Wi-Fi network:
      Constantly ON

    • Cloud is enabled, but not connected:
      1 second ON /5 seconds OFF

    • Connected to Shelly Cloud:
      Constantly ON

    • OTA (Over the Air Update):
      ½ sec ON / ½ second OFF

    • Button pressed and held for 5 seconds:
      ½ second ON / ½ second OFF

    • Button presses and held for 10 seconds:
      ¼ second ON / ¼ second OFF

The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.





Size (HxWxD):

37x42x16 / 1.46x1.65x0.63


26 g / 0.92 oz

Screw terminals 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


Wall console

Shell material:


Shell color:


Terminal Color:



Ambient working temperature:

-20 °C to 40 °C / -5 °F to 105 °F


30 % to 70 % RH

Max. altitude:

2000 m / 6562 ft


Power supply:

  • 110-240 V~

  • 24-48 V⎓

  • 12 V⎓

Power consumption:

< 1.2 W

External protection:

Cable protection switch in accordance with EN60898-1 (tripping characteristic B or C, max. 16 A rated current, min. 6 kA interrupting rating, energy limiting class 3)

Output circuits ratings

Max. switching voltage:

  • 240 V~

  • 30 V⎓

Max. switching current:

  • 16 A/240 V~

  • 10 A/30 V⎓

Sensors, meters

Internal-temperature sensor:





802.11 b/g/n

RF band:

2401 - 2483 МHz

Max. RF power:

< 20 dBm


Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
(Depends on local conditions)



4.2 with BLE

RF band:

2400 - 2483.5 MHz

Max. RF power:

< 4 dBm


Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)

Microcontroller unit





Firmware capabilities



Webhooks (URL actions):

20 with 5 URLs per hook





Basic wiring diagrams

1 Gen3 AC.png

110-240 V~ power supply

1 Gen3 DC.png

24-48 V⎓ power supply

1 Gen3 12V.png

12 V⎓ stabilized power supply





Load circuit input terminal


Live wire (110-240 V~)


Load circuit output terminal


Neutral wire


Switch (controlling O) input terminal


12/24-48V ⎓ positive wire


12 V⎓ positive terminal


12/24-48V⎓ ground wire


Live terminal (110-240 V~)


Neutral terminal




24-48 V⎓ positive terminal



12/24-48V⎓ ground terminal

Components and APIs


Shelly 1 Gen3 multilingual EU declaration of conformity.pdf

Printed user guide

Shelly 1 Gen3 multilingual printed user and safety guide.pdf

Installation guides

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