The Shelly2L Gen3 is a compact dual-channel smart relay designed for lighting control ininstallations without a neutral wire. It operates on 220–240V AC power and requires the includedShelly Bypass 1L/2L connected in parallel to the load for proper functionality in no-neutral setups.
The device supports Wi-Fi and Bluetooth connectivity, allowing for remote control via the Shelly app or integration with home automation systems such as Home Assistant. As it's a Gen3 device, it can also be used as a Bluetooth gateway for Shelly BLU devices.
It is compatible with various smart home protocols, including MQTT, WebSocket, and Matter (via firmware update). The Shelly 2L Gen3 features an internal temperature sensor for overheating protection and is designed to fit into most standard electrical wall boxes or behind switches (please check dimensions before purchasing, as back/wall boxes vary in depth).
Different types of actions, scenarios, and schedules can be set to sync your environment to your daily activities or business needs, via the Shelly smart home ecosystem, including theShelly Smart Control app- or link it with a popular home automation software such asHome Assistant via aRaspberry Pi!
Please research the device and your home wiring (safely, see below) before purchasing.
⚠️Caution - Read Before Buying⚠️
Before beginning the installation, please read this guide and any other documents accompanying the device carefully and completely
Danger of electrocution.The mounting/installation of the device should be performed by a qualified person (electrician)
Failure to follow the installation procedures could lead to malfunction, danger to your health and life, violation of the law or refusal of legal and/or commercial guarantee(if any)
Allterco Robotics (makers of Shelly products) and Mann Enterprises LTD are not responsible for any loss or damage in case of incorrect installation or improper operation of this device due to failure to follow the user and safety instructions in the printed guide accompanying this product (also available in the resources section below)
Do not connect the device to appliances exceeding the given max load.
Use the device only with a power grid and appliances which comply with all applicable regulations. Short circuit in the power grid or any appliance connected to the device may damage the device.
Before starting, wire check that the breakers are turned off and there is no voltage on their terminals. This can be done with a phase meter or multimeter. When you are sure that there is no voltage, you can start wiring the cables.
Features
Bluetooth, Wi-Fi
2-channel switch: Supports appliances:
Up to 200W on output terminal 1
Up to 700W on output terminal 2
No Neutral wire required
No minimum load required with Shelly Bypass for 1L/2L (included)
Supports schedules, scenes and local actions
Supports scripting, HTTPS, MQTTS, Inbound and Outbound Web Sockets
Internal temperature sensor for overheating protection
No hub required! Easy control through the Shelly Smart Control app, most platforms and protocols, as well as voice assistants. Use it with Alexa, Home Assistant, or your preferred automation platform.
Wi-Fi range extender & Bluetooth gateway
Specifications
Size (HxWxD)
37x42x16 ±0.5 mm
Weight
28g
Screw terminals max torque
0.4 Nm / 3.5 lbin
Conductor cross-section
0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules)
Conductor stripped length
6 to 7 mm / 0.24 to 0.28 in
Mounting
In-wall
Shell material
Plastic
Shell color
Cyan
Terminal color
Black
Ambient working temperature
-20 °C to 40 °C
Storage temperature
10°C to 40 °C
Humidity
30 % to 70 % RH
Max. altitude
2000 m / 6562 ft
Power supply
220-240 V~ 50Hz (Shelly Bypass is required for the load at O1)
Shelly Bypass included
Yes
Power consumption
< 1.2 W
Neutral not needed
Yes (Shelly Bypass is required for the load at O1)
Min. load without neutral and without a Bypass
No (Shelly Bypass is required for the load at O1), for all LED lights.
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