Shelly 1L Gen3
Shelly · 1L Gen3
The Shelly 1L Gen3 is a compact smart relay designed specifically for installations where there is no neutral wire behind the switch. This makes it ideal for upgrading older electrical systems without having to rewire them. This device lets you control lights and automations via WiFi, mobile app, voice assistants, or home automation systems such as Home Assistant. The third generation improves hardware performance, connection stability, and automation capabilities compared with previous models. The Shelly 1L Gen3 works locally without relying on the cloud and offers support for MQTT, Webhooks, and internal scripts. It also supports advanced integration with Home Assistant through the official Shelly integration. Depending on the connected load, it may require the Shelly Bypass to ensure stable operation with low-power LED fixtures.
✓ Pros
- No neutral wire required
- Very compact
- Compatible with Home Assistant
- Local control without the cloud
- Compatible with MQTT
- Built-in WiFi and Bluetooth
- Ideal for older installations
✗ Cons
- May require Shelly Bypass
- Does not use Zigbee
- Setup is somewhat advanced for new users
- Not compatible with Matter at this time
- Only for compatible loads
Compatibility
Specifications
| Model | Shelly 1L Gen3 |
| Type | smart relay without neutral |
| Connectivity | WiFi 2.4GHz and Bluetooth |
| Installation | behind switches |
| Neutral required | 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
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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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