Shelly 1 Mini Gen3

Device Identification
- Device Name: Shelly 1 Mini Gen3
- Device Model: S3SW-001X8EU
- Device SSID: Shelly1MiniG3-XXXXXX
- BLE Model ID: 0x1015
Short Description
The Shelly 1 Mini Gen3 is a compact smart switch with potential-free contacts, enabling remote control of electrical appliances via smartphone, tablet, PC, or home automation systems. It operates standalone on a local Wi-Fi network or integrates with cloud-based home automation services. This model is an enhanced version of the Shelly Plus 1 Mini, featuring a more advanced processor and increased memory.
The device can be remotely accessed, controlled, and monitored from anywhere with internet connectivity, provided it remains connected to a Wi-Fi router and the Internet.
It is designed for retrofit installation in standard electrical wall boxes, behind power outlets, light switches, or other space-constrained locations.
The Shelly 1 Mini Gen3 includes an embedded Web Interface for monitoring, control, and configuration.
Main Features
- Wi-Fi Connectivity: Connects to your home Wi-Fi network for remote monitoring and control.
- Smart Home Integration: Compatible with Google Assistant, Amazon Alexa, and Samsung SmartThings for voice control and automation.
- Bluetooth Connectivity: Supports Bluetooth and BLE gateway functionality, useful during setup and device pairing.
- User-Friendly Interface: Includes a reset button for manual configuration and troubleshooting.
- Improved Processor & Memory: Enhanced performance with upgraded hardware.
- Wireless Protocols: Supports Wi-Fi (802.11 b/g/n) and Bluetooth 4.2 with defined indoor and outdoor range capabilities.
- Dry Contact Relay: Enables switching of low-voltage devices safely.
- BLE Gateway: Acts as a bridge between Shelly BLU devices and the broader Shelly ecosystem—receives Bluetooth signals and forwards them to the cloud or local devices.
- Wi-Fi Range Extender: Extends your Wi-Fi coverage by receiving, amplifying, and rebroadcasting the signal over a wider area.
- Scripting Support: Shelly Script Language Features
- Wide Integration Options: Supports HTTP API, MQTT(s), Webhooks (HTTP/HTTPS), and UDP for integration with third-party systems.
- Advanced Scheduling: Schedule complex operations based on date, time of day, weekdays, hours, minutes, and seconds.
Use Cases
- Remote Appliance Control: Turn devices on/off using mobile apps, tablets, PCs, or home automation platforms.
- Internet-Connected Convenience: Access and manage devices from any location with internet access.
- Space-Efficient Retrofitting: Easily installed in tight spaces such as standard wall boxes, behind outlets, or switches.
- Home Automation: Automate appliance power management for smarter, more convenient living.
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 contact relay input on screw terminal
- 2 power supply inputs on screw terminals: N (Neutral) and L (Live)
Outputs
- 1 potential-free contact relay output on screw terminal
Connectivity
- Wi-Fi
- Bluetooth
Safety Function
- Overheating Protection
Supported Load Types
- Resistive (incandescent bulbs, heating devices)
- Capacitive (capacitor banks, electronic equipment, motor start capacitors)
- Inductive (LED drivers, transformers, fans, refrigerators, air conditioners)
User Interface
Inputs
- One Control Button
- Press and hold for 5 seconds: Enter Access Point mode and enable Bluetooth connection
- Press and hold for 10 seconds: Factory reset the device
Outputs
- Monochrome LED Indicator
- 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 in progress: 0.5 sec ON / 0.5 sec OFF
- Button pressed and held for 5 seconds: 0.5 sec ON / 0.5 sec OFF
- Button pressed and held for 10 seconds: 0.25 sec ON / 0.25 sec OFF
Note: The LED states are prioritized from top to bottom. Each subsequent state overrides the previous one.
Specifications
| Category | Value |
|---|---|
| Physical | |
| Size (H×W×D) | 29 × 34 × 16 ±0.5 mm / 1.34 × 1.11 × 0.63 ±0.02 in |
| Weight | 19 ±1 g / 0.65 ±0.04 oz |
| Screw Terminal Max Torque | 0.4 Nm / 3.5 lbin |
| Conductor Cross Section | 0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, bootlace ferrules) |
| Conductor Stripped Length | 6 to 7 mm / 0.24 to 0.28 in |
| Mounting | Wall box |
| Shell Material | Plastic |
| Shell Color | Blue: C-95%; M-53%; Y-0%; K-0% |
| Terminal Color | Black |
| 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 VAC | | Relay Type | Dry, NO contact, 1-pole, µ contact | | Power Consumption | < 1.2 W | | External Protection | Tripping characteristic B or C; max 10 A rated current; min. 6 kA interrupting rating; energy limiting class 3 |
| Output Circuit Ratings | | | Max Switching Voltage | 240 VAC / 30 VDC | | Max Switching Current | 8 A / 240 VAC; 5 A / 30 VDC | | Max Output Power | 2000 W / 240 VAC; 150 W / 30 VDC | | Voltage Protection / Cutoff | No | | Current Protection / Cutoff | No | | Max Power Protection / Cutoff | No |
| Sensors & Meters | | | Internal Temperature Sensor | Yes |
| Radio | | | Wi-Fi | | | Protocol | 802.11 b/g/n | | RF Band | 2401 – 2495 MHz | | Max RF Power | < 20 dBm | | Range | Up to 30 m (100 ft) indoors; up to 50 m (160 ft) outdoors
(Depends on local conditions) |
| Bluetooth | | | Protocol | 4.2 | | RF Band | 2400 – 2483.5 MHz | | Max RF Power | < 4 dBm | | Range | Up to 10 m (33 ft) indoors; up to 30 m (100 ft) outdoors
(Depends on local conditions) |
| Microcontroller Unit | | | CPU | ESP-Shelly-C38F | | Flash Memory | 8 MB |
| Firmware Capabilities | | | Schedules | 20 | | Webhooks (URL Actions) | 20 total, up to 5 URLs per webhook | | Scripting | Yes | | MQTT | Yes | | UDP | Yes | | Advanced Schedules | Yes | | KVS (Key-Value Store) | Yes |
Basic Wiring Diagrams

Legend
Terminals
- SW: Switch (controlling O) input terminal
- L: Live (110–240 VAC) wire
- O: Load circuit output terminal
- N: Neutral wire
- I: Load circuit input terminal
- L: Live (110–240 V) terminal
- N: Neutral terminal
Wires
- Refer to diagram for correct routing and labeling
Shelly Smart Control
Shelly Web User Interface
Components and APIs
Compliance
- Shelly 1 Mini Gen3 Multilingual EU Declaration of Conformity (2025-07-22)
- Shelly 1 Mini Gen3 UK PSTI ACT Statement of Compliance
- Shelly 1 Mini Gen3 x2 UK PSTI ACT Statement of Compliance
- Shelly 1 Mini Gen3 AU/NZ Certificate for Suitability
Compliance Archive
Printed User Guide
- Shelly 1 Mini Gen3 Multilingual Printed User and Safety Guide
- Ръководство за употреба и безопасност (Bulgarian)