Shelly 1 Gen4

Device identification

• Device name: Shelly 1 Gen4
• Device model: S4SW-001X16EU
• Device SSID: Shelly1G4-XXXXXXXXXXXX
• Device Bluetooth ID: 0x1028

Short description

Shelly 1 Gen4 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.

Shelly 1 Gen4 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 Gen4 has embedded Web Interface, which can be used to monitor and control the device, as well as adjust its settings.

The device has multi-protocol wireless MCU which provides Zigbee and Bluetooth connectivity, ensuring a secure connection.

This device is compatible with Matter.

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 Gen4 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 gateways are available for inclusion purposes, which may be useful during the setup process.
• Zigbee Connectivity: Zigbee is 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: Upgraded with an improved processor and support for Zigbee connectivity.
• 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/ax) and Bluetooth 5.0 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.
• Zigbee Range extender for IoT devices: A Zigbee extender is employed to expand the reach of your Zigbee network by receiving your Zigbee signal, enhancing its strength, and then transmitting the enhanced signal over a wider area.
• Scripting: https://shelly-api-docs.shelly.cloud/gen2/Scripts/ShellyScriptLanguageFeatures/
• 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: https://shelly-api-docs.shelly.cloud/gen2/DynamicComponents/Virtual/
• KNX net/IP support: https://shelly-api-docs.shelly.cloud/gen2/Integrations/KNX/

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 Gen4 is connected to a Wi-Fi router.
• Home Automation: Shelly 1 Gen4 enables automatic control of power appliances for more relaxing and enjoyable experience.

🏠 Home Automation Use Cases

1. Light Control

• Remote control of standard lights (LED, incandescent, halogen).
• Set timers or schedules for lights (e.g., porch lights on at sunset).
• Use with motion sensors (for example Shelly BLU Motion) for occupancy-based lighting.

2. Garage Door Automation

• Act as a smart trigger to open/close garage doors.
• Monitor door status with a sensor input i.e using Shelly Plus Add-on.
• Integrate with voice assistants for hands-free control.

3. Fan or Ventilation Control

• Automate bathroom or kitchen fans based on humidity sensors (like Shelly BLU H&T).
• Turn on ventilation during specific times of day or based on occupancy.

4. Heater or Towel Rail Switching

• Control electric towel warmers or heaters (Max. switching current: 16A).
• Schedule operation or link to temperature thresholds via sensors (like Shelly BLU H&T).

🏢 Commercial Applications

1. Lighting Automation in Small Offices or Shops

• Control light zones based on business hours.
• Use with motion detectors (for example Shelly BLU Motion) for energy savings.

2. Meeting Room Occupancy

• Enable or disable equipment like projectors depending on occupancy.

3. Security and Access Systems

• Remotely unlock gates or doors for deliveries.
• Monitor open/close state of access points.

🏭 Industrial/Utility Use Cases

1. Equipment Monitoring & Control

• Power cycling routers, modems, or network switches.

2. Pump or Motor Control

• Automate irrigation pumps in greenhouses or fields (Max. switching current: 16A).
• Remotely control or valves (i.e. Shelly Add-On Mechanical Manipulator).

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

Integrations

Amazon Alexa supported capabilities

Yes

Google Smart Home supported traits

Yes

Samsung SmartThings supported capabilities

Yes

Simplified internal schematics

Device electrical interfaces

Inputs

• 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

Outputs

• 1 potential-free contacts relay output on screw terminal

Connectivity

• Wi-Fi
• Bluetooth
• Zigbee

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

Inputs

• One (Control) button

Outputs

• LED (monocolor) indication

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

Specifications

Quantity

Value

Physical

Size (HxWxD):

37x42x16 mm / 1.46x1.65x0.63 inch

Weight:

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

Mounting:

Wall console

Shell material:

Plastic

Shell color:

Blue

Terminals color:

Grey

Environmental

Ambient working temperature:

-20 °C to 40 °C / -5 °F to 105 °F

Humidity:

30 % to 70 % RH

Max. altitude:

2000 m / 6562 ft

Electrical

Power supply:

• 110-240 V~
• 24-48 V⎓
• 12 V⎓

Power consumption:

< 1 W

Neutral not needed:

No

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:

Yes

Radio

Wi-Fi

Protocol:

802.11 b/g/n/ax

RF band:

2412 - 2472 МHz

Max. RF power:

< 20 dBm

Range:

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

Bluetooth

Protocol:

5

RF band:

2402 - 2480 MHz

Max. RF power:

< 4 dBm

Range:

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

Zigbee

Protocol:

802.15.4

Zigbee repeater:

Yes

RF bands:

2400 to 2483.5 MHz

Max. RF power:

< 20 dBm

Range:

Up to 100 m / 328 ft indoors and 300 meters / 984 ft outdoors
(Depends on local conditions)

Microcontroller unit

CPU:

ESP-Shelly-C68F

Flash:

8MB

Firmware capabilities

Schedules:

20

Webhooks (URL actions):

20 with 5 URLs per hook

Scripting:

Yes

MQTT:

Yes

Basic wiring diagrams

110-240 V~ power supply

24-48 V⎓ power supply

12 V⎓ stabilized power supply

Legend

Terminals

Wires

I

Load circuit input terminal

L

Live wire (110-240 V~)

O

Load circuit output terminal

N

Neutral wire

SW

Switch (controlling O) input terminal

+

12/24-48V ⎓ positive wire

+12V

12 V⎓ positive terminal

GND

12/24-48V⎓ ground wire

L

Live terminal (110-240 V~)

N

Neutral terminal

+

24-48 V⎓ positive terminal

Ʇ

12/24-48V⎓ ground terminal

Components and APIs

• This device
• All Shelly devices and services

Compliance

Shelly 1 Gen4 multilingual EU declaration of conformity.pdf

Shelly 1 Gen4 UK PSTI ACT Statement of compliance.pdf

Printed user guide

Shelly 1 Gen4 multilingual printed user and safety guide.pdf

Installation guides