Shelly 1L Gen3
Shelly 1L Gen3 is a compact single-channel Wi-Fi smart relay designed for lighting control in installations without a neutral wire. It operates on 220–240 V AC and requires the included Shelly Bypass for 1L/2L, connected in parallel with the load, to ensure stable operation in no-neutral circuits, especially with LED lighting.
As a Gen3 device, Shelly 1L Gen3 is powered by the Shelly ESP processor (ESP-Shelly-C38F) with 8 MB flash, providing faster response times, improved reliability, and expanded integration capabilities. It also includes Bluetooth connectivity for fast onboarding and can act as a Bluetooth gateway for Shelly BLU devices.
The device supports local control, cloud control, scripting, and integrations with platforms such as Home Assistant, making it suitable for advanced automation in modern smart homes.
Key Features
Use Cases
What’s Included
Technical Specifications
Power & Switching
Neutral Required: No (Shelly Bypass required for LED loads)
Max Switching Voltage: 240 V AC
Max Switching Power: 200 W
Power Consumption: < 1.2 W
Internal Temperature Sensor: Yes
Load Requirements
Minimum Load Without Neutral (Incandescent): Bypass not required
External Protection (Recommended)
Tripping Characteristic: B or C
Interrupting Rating: 6 kA
Energy Limiting Class: 3
Connectivity – Wi-Fi
RF Band: 2401–2495 MHz
Max RF Power: < 20 dBm
Range: Up to 30 m indoors, up to 50 m outdoors
Connectivity – Bluetooth
RF Band: 2400–2483.5 MHz
Max RF Power: < 4 dBm
Range: Up to 10 m indoors, up to 30 m outdoors
Processor & Software
Clock Frequency: 160 MHz
RAM: 512 KB
Flash Memory: 8 MB
Schedules: Up to 20
Webhooks: 20 (with up to 5 URLs per hook)
Scripting (mJS): Yes
MQTT: Yes
Environmental
Storage Temperature: 10 °C to 40 °C
Humidity: 30–70% RH
Maximum Altitude: 2000 m
Physical
Weight: 24 g
Mounting: In-wall (behind switch or in wall box)
Shell Material: Plastic
Colour: Cyan
Wiring
Conductor Cross-Section: 0.2–2.5 mm² (24–14 AWG)
Conductor Strip Length: 6–7 mm