Shelly 2L Gen3 – Wi-Fi Smart Relay (No Neutral Required, 2 Channels)
Shelly 2L Gen3 is a compact dual-channel Wi-Fi smart relay designed for lighting control in installations without a neutral wire. It operates on 220–240 V AC and includes a Shelly Bypass for 1L/2L, which is required for stable operation on output O1 in no-neutral setups.
The device allows independent control of two lighting circuits, making it ideal for retrofitting in existing electrical installations where only a live wire is available. Powered by the Shelly Gen3 ESP processor with 8 MB flash memory, Shelly 2L Gen3 delivers fast response times, improved reliability, and advanced integration support.
With Wi-Fi connectivity, Bluetooth onboarding, and the ability to act as a Bluetooth gateway for Shelly BLU devices, the device supports local control, cloud automations, scripting, and integration with platforms such as Home Assistant and Alexa.
Key Features
Use Cases
What’s Included
Technical Specifications
Power & Switching
Neutral Required: No (Shelly Bypass required for load on O1)
Max Switching Voltage: 240 V AC
Max Switching Power (O1): 200 W
Max Switching Power (O2): 700 W
Power Consumption: < 1.2 W
Load & Channel Information
Bypass Requirement (O1): Shelly Bypass required (included)
Bypass Requirement (O2): Not required
Connectivity – Wi-Fi
RF Band: 2401–2495 MHz
Range: Up to 30 m indoors, up to 50 m outdoors
Connectivity – Bluetooth
Range: Up to 10 m indoors, up to 30 m outdoors
Features
Overload Protection: No
Custom Scripts (mJS): Yes
HTTP / HTTPS Webhooks: Yes
Environmental
Humidity: 30–70% RH
Physical
Mounting: In-wall (behind switch or in wall box)