SHELLY - Wi-Fi Smart Relay Switch Shelly 2L Gen3 (no neutral wire)

Shelly 2L Gen3

Shelly 2L Gen3 is a compact, two-channel smart switch tailored for precise lighting control. A standout feature of this device is that it doesn't require a Neutral wire to operate. However, it needs a Shelly Bypass 1L/2L Gen3 connected in parallel to the load at the first channel. Shelly 2L Gen3 allows users to effortlessly control their lighting setups through a mobile phone, tablet, PC, or integrated home automation system.

The device can function standalone within a local Wi-Fi network or can be integrated with cloud home automation services. As long as the device remains connected to a Wi-Fi router and the Internet, users gain the flexibility to access, control, and monitor their lighting configurations from virtually anywhere.

Designed with adaptability in mind, Shelly 2L Gen3 is engineered to snugly fit within standard electrical wall boxes, be discreetly placed behind light switches, or in other areas where space might be a limiting factor. An added benefit is its embedded Web Interface, which allows users to not only monitor and control their lighting but also to fine-tune the Device settings with ease.

Smart Lighting Without a Neutral Wire

Shelly 2L Gen3 is a two-cannel smart relay for lighting control that requires no neutral wire, making it compatible with all installations. Easy to install in under 10 minutes, it allows you to control your lights remotely, set schedules, and save energy. Perfect for any home or building, it ensures you never leave lights on by mistake, offering convenience and peace of mind.

Perfect to retrofit!

No need for a neutral wire. You can power and control your light, or other appliances using just a live wire, with no necessity to connect a neutral wire to the device.

2 channels!

Now you can fit it to control 2 separate lights.

Minimum bulb watts

The device requires a Bypass 1L/2L Gen3 to be installed next to the light, however, that allows it to control bulbs greater than 5W.

Wi-Fi Connectivity

Shelly 2L Gen3 connects to your home Wi-Fi network, allowing you to control it remotely through the Shelly mobile app or other smart home platforms.

Remote Control

You can remotely control the connected device or appliance from anywhere with an internet connection using the Shelly app on your smartphone or tablet.

Voice Control

If integrated with voice assistants like Amazon Alexa or Google Assistant, you can control the device using voice commands.

Scheduling and Automation

Shelly 2L Gen4 supports scheduling and automation, enabling you to set timers and create routines for your connected devices. For example, you can schedule lights to turn on and off at specific times.

Features of Shelly 2L Gen3

• Bluetooth, Wi-Fi
• 2-channel switch: supports appliances up to 200 W on output terminal 1, and up to 700 W on output terminal 2
• No Neutral wire required
• No minimum load required with Shelly Bypass for 1L/2L*
• 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

Technical specifications of Shelly 2L Gen3

• Physical
• Size (HxWxD): 37x42x16 ±0.5 mm
• Weight: 28 g
• Screw terminals max torque: 0.4 Nm
• 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
• Mounting: In-wall
• Shell material: Plastic
• Shell color: Cyan
• Terminal color: Black
• Environmental
• Ambient working temperature: -20 °C to 40 °C
• Storage temperature: 10°C to 40 °C
• Humidity: 30 % to 70 % RH
• Electrical
• Power supply: 220-240 V~ 50Hz (Shelly Bypass is required)
• 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, No, Bypass is not needed for incandescent lights.
• External protection: 10 A, tripping characteristic B or C, 6 kA interrupting rating, Energy limiting class 3
• Output circuits ratings
• Max. switching voltage: 240 V~ 50 Hz
• Max. switching power: 200 W through O1, 700 W through O2
• Sensors, meters
• Internal-temperature sensor: Yes
• Radio
• Wi-Fi Protocol: 802.11 b/g/n
• RF band: 2401 - 2495 МHz
• Max. RF power: < 20 dBm
• Range: Up to 30 m indoors and 50 m outdoors (Depends on local conditions)
• Bluetooth Protocol: 4.2
• RF band: 2400 - 2483.5 MHz
• Max. RF power: < 4 dBm
• Range: Up to 10 m indoors and 30 m outdoors (Depends on local conditions)
• Microcontroller unit
• CPU: ESP-Shelly-C38F
• Clock frequency: 160 Mhz
• RAM: 512 KB
• Flash: 8 MB
• Firmware capabilities
• Schedules: 20
• Webhooks (URL actions): 20 with 5 URLs per hook
• Scripting: Yes
• MQTT: Yes