Shelly
Shelly 1L Gen3
Shelly 1L Gen3
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Shelly 1L Gen3 Smart Switch
The Shelly 1L Gen3 is a compact smart switch designed for lighting control, especially where a neutral wire is not available. It is ideal for retrofit installations and fits neatly behind standard wall switches or inside electrical wall boxes.
With Wi-Fi and Bluetooth connectivity, Shelly 1L Gen3 allows you to control, monitor, and automate your lights from your smartphone, tablet, PC, or smart home system. It can operate locally over your Wi-Fi network or be connected to cloud-based home automation services for remote access.
Please note: Shelly 1L Gen3 requires a Shelly Bypass 1L/2L Gen3 connected in parallel to the load. Matter support is ready and can be enabled through a future firmware update.
Key Features
- No neutral wire required: Perfect for retrofit installations where only a live wire is available.
- Compact design: Fits behind light switches or inside standard electrical wall boxes.
- Wi-Fi control: Connects to your home Wi-Fi network for local and remote control.
- Bluetooth support: Makes setup and device connection easier.
- Remote access: Control your lighting from anywhere using the Shelly app.
- Voice control: Compatible with Amazon Alexa and Google Assistant when integrated.
- Scheduling and automation: Set timers, routines, and automated lighting schedules.
- Smart home integration: Supports platforms such as MQTT, Home Assistant, Samsung SmartThings, Google Home, and Alexa.
- Overheating protection: Built-in internal temperature sensor for added safety.
- Advanced firmware features: Supports scripting, HTTPS, MQTTS, inbound and outbound WebSockets.
- OTA updates: Firmware can be updated over the air for new features and security improvements.
Perfect For
- Residential lighting control
- Apartments, condominiums, hotels, and other multi-dwelling units
- Small offices, retail spaces, restaurants, and light commercial areas
- Government and municipal buildings
- Universities and colleges
Smart Home Compatibility
- Amazon Alexa: Toggle Controller support
- Google Home: On/Off control support
- Samsung SmartThings: Switch capability support
- Home Assistant: Compatible via supported integrations
- MQTT: Supported
Electrical Interfaces
- Inputs: 2 switch/button inputs on screw terminals: S1 and S2
- Power input: 1 power supply input on screw terminal: L
- Signal output: 1 switch/button signal output on screw terminal: Sx
- Relay output: 1 relay output on screw terminal: O
Supported Load Types
- Incandescent lights
- LED lights
Note: Shelly 1L Gen3 is designed for lights without step-down transformers for lower-voltage lighting.
Specifications
| Size | 37 x 42 x 16 mm ±0.5 mm |
| Weight | 24 g |
| Mounting | In-wall |
| Shell Material | Plastic |
| Shell Colour | Cyan |
| Terminal Colour | Black |
| Power Supply | 220–240 V~ 50 Hz |
| Shelly Bypass Included | Yes |
| Power Consumption | < 1.2 W |
| Neutral Required | No, Shelly Bypass is required for the load at O |
| Maximum Switching Voltage | 240 V~ 50 Hz |
| Maximum Switching Power | 200 W |
| Operating Temperature | -20°C to 40°C |
| Humidity | 30% to 70% RH |
| Max Altitude | 2000 m |
| Wi-Fi Protocol | 802.11 b/g/n |
| Wi-Fi Range | Up to 30 m indoors / 50 m outdoors, depending on local conditions |
| Bluetooth Protocol | 4.2 |
| Bluetooth Range | Up to 10 m indoors / 30 m outdoors, depending on local conditions |
| CPU | ESP-Shelly-C38F |
| RAM | 512 KB |
| Flash | 8 MB |
Firmware Capabilities
- 20 schedules
- 20 webhooks with 5 URLs per hook
- Scripting support
- MQTT support
- HTTPS and MQTTS support
- Inbound and outbound WebSockets
User Interface
Shelly 1L Gen3 includes 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.
Important Installation Note
Electrical installation should be carried out by a licensed electrician in accordance with local electrical regulations. Always ensure the power is switched off before installation.
