Descripción
The Shelly 2L Gen3 is a 2-channel smart relay, designed specifically for lighting control, with one major advantage: it does not require a neutral wire to operate. It is the ideal solution for upgrading existing electrical installations without the need for complex modifications.
It allows independent control of two lighting circuits (e.g. chandelier + spotlights), directly from the app, browser or smart home system.
For correct operation with LED bulbs, a Shelly Bypass 1L/2L Gen3 is required, included in the package, which is installed in parallel with the load on channel 1.
Thanks to its compact dimensions, the Shelly 2L Gen3 fits easily into standard flush-mounted boxes, behind the switches.
Key features
- Smart relay with 2 independent channels
-
Wireless dimming control
-
Matter Ready compatible (via firmware update)
-
Wi-Fi + Bluetooth connectivity
- Local and cloud control
- Compatible with Android, iOS, Alexa, Google Home, SmartThings
- Includes Shelly Bypass
- Automations, schedules and scenarios
- Support for MQTT, scripting and webhooks
Features and benefits
? 2 independent channels – Control two separate circuits from a single device – ideal for rooms with multiple light sources.
? No neutral wire required – Perfect for older electrical installations where there is no neutral wire in the junction box.
? Control from anywhere – You can control the lights directly from your phone or via voice command.
? Smart automations – Set lighting scenes and schedules based on the time of day or your preferences.
? Quick retrofit – Installs behind existing switches without major modifications.
? Safety and stability – Includes overheating protection and support for OTA updates.
Applications
- Control of two lighting circuits (e.g. chandelier + spotlights)
- Interior lighting automation
- Wire-free homes
- Flats and houses
- Small commercial premises
| General information |
| Model |
Shelly 2L Gen3 (S3SW-0A2X4EUL) |
| Product type |
2-channel smart relay without neutral |
| Installation |
In a box (in-wall) |
| Matter |
Ready (via firmware update) |
| Dimensions |
| Dimensions |
37 x 42 x 16 mm |
| Weight |
28 g |
| Power supply |
| Supply voltage |
220–240 V AC |
| Power consumption |
<1.2W |
| Neutral required |
No (requires Shelly Bypass for LED) |
| Outputs |
| Channels |
2 independent |
| Maximum power channel 1 |
200W |
| Maximum power, channel 2 |
700W |
| Connectivity |
| Wi-Fi |
802.11 b/g/n |
| Bluetooth |
4.2 |
| Smart features |
| Local control |
Yes |
| Cloud control |
Yes |
| MQTT |
Yes |
| Scripting |
Yes |
| Webhooks |
Yes |
| Scheduling |
20 |
| Compatibility |
| Platforms |
Android, iOS, Amazon Alexa, Google Home, Samsung SmartThings |
| Sensors and protection |
| Temperature sensor |
Yes |
| Overheating protection |
Yes |
| Operating conditions |
| Temperature |
-20°C to +40°C |
