Shelly 2L Gen3
Shelly · 2L Gen3
The Shelly 2L Gen3 is a dual smart relay designed to automate two independent electrical circuits without needing a neutral wire in the installation. That makes it especially appealing for older homes where neutral is not available at the switch boxes. Thanks to its two independent channels, it lets you control two lights or lighting groups from the Shelly app, Home Assistant, voice assistants, or advanced automations. The third generation improves stability, performance, and internal capabilities compared with previous generations. The device works over WiFi and also includes Bluetooth to make initial setup and additional integration features easier. It also supports fully local control without having to rely on the cloud. The Shelly 2L Gen3 is compatible with MQTT, Webhooks, and local automations, making it a very popular choice within the Home Assistant ecosystem. Depending on the type of LED load used, it may require a Shelly Bypass.
✓ Pros
- Control of two independent circuits
- No neutral wire required
- Compatible with Home Assistant
- Local control without cloud
- Compatible with MQTT
- Built-in WiFi and Bluetooth
- Ideal for older installations
✗ Cons
- May require a Shelly Bypass
- Does not use Zigbee
- Advanced setup for some installations
- Not currently compatible with Matter
- Limited space in some electrical boxes
Compatibility
Specifications
| Model | Shelly 2L Gen3 |
| Type | dual smart relay without neutral |
| Channels | 2 |
| Connectivity | WiFi 2.4GHz and Bluetooth |
| Installation | behind switches |
| Requires neutral | no |
| Compatibility | Home Assistant, Alexa, and Google Home |
| Protocols | MQTT, HTTP, Webhooks |
| Use | lighting and automation |
| Local control | yes |
| Power supply | Corriente eléctrica |
| Neutral wire required | No |
Related content
Watch on YouTube
Smart Home Without Neutral with Shelly 1L and 2L Gen 3 and Home Assistant Integration
Can you imagine turning any switch in your home into a smart one without major work or running new cables? If you live in an older house, chances are there’s no neutral wire in your switch boxes. Until recently, that was a nightmare for smart home enthusiasts, but the new Shelly 1L Gen 3 and Shelly 2L Gen 3 are here to change the game. In this article, we’ll break down how these relays work, how to install them step by step, and why they’re the ultimate solution for modernizing your home.
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