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, enabling remote control of electric appliances via mobile phone, tablet, PC, or home automation systems. It can operate standalone in a local Wi-Fi network or be managed through cloud-based home automation services.
The device supports remote access, control, and monitoring from anywhere with internet connectivity, as long as it's connected to a Wi-Fi router. It fits into standard electrical wall boxes, behind power sockets, light switches, or other compact spaces.
It features an embedded web interface for monitoring, control, and configuration. The device includes a multi-protocol wireless MCU supporting Zigbee and Bluetooth for secure communication. Shelly 1 Gen4 is compatible with Matter.
Main Features
- Wi-Fi Connectivity: Connects to your home Wi-Fi network for remote monitoring and control.
- Integration with Smart Home Platforms: Compatible with Google Assistant, Amazon Alexa, and Samsung SmartThings for voice control and automation.
- Local and Cloud Control: Operates independently on a local network or via cloud services.
- Bluetooth Connectivity: Supports BLE gateways for setup and inclusion purposes.
- Zigbee Connectivity: Enables integration into Zigbee networks during setup.
- User-Friendly Interface: Includes a reset button for manual interaction.
- Improved Processor: Upgraded hardware with Zigbee support.
- Embedded Web Interface: Built-in interface for device management.
- Wireless Connectivity: Supports Wi-Fi (802.11 b/g/n/ax) and Bluetooth 5.0 with defined indoor/outdoor ranges.
- Dry Contact: Switches lower-voltage devices on/off.
- BLE Gateway: Acts as a bridge between Shelly BLU devices and the wider Shelly ecosystem.
- Wi-Fi Range Extender for IoT Devices: Extends Wi-Fi signal coverage by receiving and rebroadcasting signals.
- Zigbee Range Extender for IoT Devices: Expands Zigbee network reach by amplifying and retransmitting signals.
- Scripting: Supports Shelly Script Language
- Wide Range of Integrations: Works with third-party systems via HTTP API, MQTT(s), Webhooks (HTTP/HTTPS), and UDP.
- Schedules: Allows complex scheduling based on date, time, weekdays, hours, minutes, and seconds.
- Virtual Components: Dynamic Virtual Components Documentation
- KNX net/IP Support: KNX Integration Guide
Use Cases
Remote Appliance Control
Turn on or off electric appliances remotely using a smartphone, tablet, PC, or home automation system.
Internet-Connected Convenience
Access and control devices from anywhere with internet access, provided the Shelly 1 Gen4 is connected to Wi-Fi.
Home Automation
Enable automatic control of power appliances for enhanced comfort and convenience.
Home Automation Use Cases
Light Control
- Remote control of standard lights (LED, incandescent, halogen).
- Set timers or schedules (e.g., porch lights at sunset).
- Integrate with motion sensors (e.g., Shelly BLU Motion) for occupancy-based lighting.
Garage Door Automation
- Serve as a smart trigger to open/close garage doors.
- Monitor door status using sensor inputs (e.g., Shelly Plus Add-on).
- Enable voice assistant control (hands-free operation).
Fan or Ventilation Control
- Automate bathroom or kitchen fans based on humidity sensors (e.g., Shelly BLU H&T).
- Turn on ventilation at specific times or based on occupancy.
Heater or Towel Rail Switching
- Control electric towel warmers or heaters (max. switching current: 16A).
- Schedule operation or link to temperature thresholds via sensors (e.g., Shelly BLU H&T).
Commercial Applications
Lighting Automation in Small Offices or Shops
- Control light zones based on business hours.
- Use with motion detectors (e.g., Shelly BLU Motion) for energy savings.
Meeting Room Occupancy
- Automatically enable/disable projectors or AV equipment based on room occupancy.
Security and Access Systems
- Remotely unlock gates or doors for deliveries.
- Monitor open/close state of access points.
Industrial/Utility Use Cases
Equipment Monitoring & Control
- Power-cycle routers, modems, or network switches remotely.
Pump or Motor Control
- Automate irrigation pumps in greenhouses or fields (max. switching current: 16A).
- Control valves remotely (e.g., using Shelly Add-On Mechanical Manipulator).
Main Applications
- Residential
- MDU (Multi Dwelling Units – apartments, condos, hotels, etc.)
- Light Commercial (small offices, retail, restaurants, gas stations, etc.)
- Government/Municipal
- University/College
Integrations
Amazon Alexa Supported Capabilities
Google Smart Home Supported Traits
Samsung SmartThings Supported Capabilities
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 drivers, transformers, fans, refrigerators, air conditioners, washing machines, tumble dryers)
User Interface
Inputs
- One (Control) Button
- Press and hold for 5 seconds: Enables Device Access Point and Bluetooth connection.
- Press and hold for 10 seconds: Performs factory reset.
- Press 5 times: Switches from Matter (default) to Zigbee profile. Enters inclusion mode for 3 minutes.
- Press 3 times: Re-enables inclusion mode for another 3 minutes if previous window was missed.
Outputs
- LED (Monocolor) Indication
- AP enabled, Wi-Fi disabled: 1 sec ON / 1 sec OFF
- Wi-Fi enabled but not connected: 1 sec ON / 3 sec OFF
- Connected to Wi-Fi network: Constantly ON
- Cloud enabled but not connected: 1 sec ON / 5 sec OFF
- Connected to Shelly Cloud: Constantly ON
- OTA (Over-the-Air Update): ½ sec ON / ½ sec OFF
- Button pressed and held for 5 seconds: ½ sec ON / ½ sec OFF
- Button pressed and held for 10 seconds: ¼ sec ON / ¼ sec OFF
Note: The list starts with initial device status and has descending priority. Each new state overrides the previous one.
Specifications
| Quantity | Value |
|---|---|
| Physical | |
| Size (HxWxD) | 37 × 42 × 16 mm / 1.46 × 1.65 × 0.63 inch |
| Weight | 26 g / 0.92 oz |
| Screw terminals max torque | 0.4 Nm / 3.5 lbin |
| Conductor cross section | 0.5 to 4 mm² / 20 to 11 AWG (solid, stranded, 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 per EN60898-1 (B/C trip characteristic, max 16 A, min 6 kA interrupting rating, class 3 energy limiting) | | 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 MHz | | Max. RF power | < 20 dBm | | Range | Up to 30 m / 100 ft indoors, 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, 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, 300 m / 984 ft outdoors (depends on local conditions) | | Microcontroller unit | | | CPU | ESP-Shelly-C68F | | Flash | 8 MB | | Firmware capabilities | | | Schedules | 20 | | Webhooks (URL actions) | 20 hooks with up to 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 | Description | Wires | Description |
|---|---|---|---|
| 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 | + | 12/24–48 V⎓ positive wire |
| +12V | 12 V⎓ positive terminal | GND | 12/24–48 V⎓ ground wire |
| L | Live terminal (110–240 V~) | ||
| N | Neutral terminal | ||
| + | 24–48 V⎓ positive terminal | ||
| ᶠ | 12/24–48 V⎓ ground terminal |
Shelly Smart Control
Shelly Web User Interface
Components and APIs
Compliance
- Shelly 1 Gen4 multilingual EU Declaration of Conformity (2025-07-25)
- Shelly 1 Gen4 UK PSTI ACT Statement of Compliance
Compliance Archive
- [Shelly 1 Gen4 multilingual EU Declaration of Conformity (2025-03-10)](/wiki/spaces/KB/pages/974127105/Shelly+1+Gen4?preview=%2F974127105%2F1623326845%2FShelly+1+Gen4+multilingual+EU+declaration+of+conformity+75+2025-03-10.pdf)Printed User Guide
Installation Guides
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