Shelly 1L Gen3 - 1 Channel Smart Light Control
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Product Information
Full details
The Shelly 1L Gen3 is a one-channel smart switch designed for easy lighting control, especially in installations without a neutral wire. Its key benefit is simplifying smart home integration for existing lights with its no-neutral requirement and optional bypass. A primary consideration is the need for the Shelly Bypass for 1L to enable operation without a minimum load. This device offers WiFi and Bluetooth connectivity, supports schedules, scenes, local actions, scripting, and integrates with major automation platforms and voice assistants, all without requiring a separate hub.
All features
| Series | 1L Gen3 |
|---|---|
| Model Part Number | SH24334 |
| Brand | Shelly |
Extended Product Information
FAQs
Do I need a neutral wire to install the Shelly 1L Gen3?
No, a key feature of the Shelly 1L Gen3 is its ability to operate without a neutral wire at the switch location. This makes it ideal for many older installations.
What is the Shelly Bypass for 1L and why do I need it?
The Shelly Bypass for 1L is an accessory that connects in parallel to your light fixture. It is required when the load is less than a minimum threshold (typically 20-40W for standard smart switches) to prevent flickering or improper operation of low-power lights like LEDs. With the bypass, the 1L Gen3 supports loads as low as 1W.
Can I control the Shelly 1L Gen3 manually without my phone?
The Shelly 1L Gen3 itself does not have a physical button. You can control it via your smartphone app, voice commands, or through automated scenes and schedules. If you need a physical switch, you would need to integrate it with a separate smart button or automation trigger.
Does the Shelly 1L Gen3 require a hub?
No, the Shelly 1L Gen3 connects directly to your WiFi network and does not require a separate hub for operation.
How does the overheating protection work?
The device has an internal temperature sensor. If the internal temperature exceeds a safe limit, it will automatically shut down the output to prevent damage. It will typically resume operation once it has cooled down sufficiently.
Can I use multiple Shelly 1L Gen3 devices together?
Yes, you can install multiple Shelly 1L Gen3 devices on your network and control them individually or group them into scenes and rooms within the Shelly Smart Control app or your preferred automation platform.
What is the warranty period for the Shelly 1L Gen3?
Shelly devices typically come with a two-year manufacturer's warranty against defects. Please refer to the official Shelly documentation or retailer for specific warranty terms.
Troubleshooting
Device not connecting to WiFi
Verify your WiFi password and network name (SSID). Ensure the device is within router range. Try rebooting your router and the Shelly 1L Gen3.
Lights flickering or not turning on/off correctly
If using low-power LEDs, ensure the Shelly Bypass for 1L is installed correctly and connected in parallel to the load. Check that the bypass is the correct model for your load type.
App cannot find the device during setup
Make sure Bluetooth is enabled on your phone and the Shelly 1L Gen3 is in pairing mode (indicated by a blinking LED). Ensure your phone is close to the device.
Device becomes unresponsive
Check the power supply to the device. Try power cycling the device by turning off the circuit breaker for a few seconds and then turning it back on. Ensure the internal temperature sensor has not triggered an overheat shutdown.
Automation rules not triggering
Verify the rules are correctly configured in the Shelly app or your automation platform. Check that the device is online and communicating. Ensure any dependent sensors or devices are also online and functioning.
Pros and Cons
Pros
- Installs easily in lighting circuits without a neutral wire.
- Supports very low power loads (down to 1W with bypass), preventing LED flicker.
- Offers extensive integration options with various smart home platforms and protocols.
- Enables local control and advanced scripting for robust automation.
- Acts as a WiFi range extender and Bluetooth gateway.
Cons
- Requires the Shelly Bypass for 1L for low-load operation.
- Does not include a physical button for manual control on the device itself (relies on app/automation).
- Overheating protection might limit operation in extremely demanding conditions.
- Advanced features like scripting require some technical knowledge.
Setup, Compatibility & Care
Setup:
- Ensure power to the circuit is turned off before installation.
- Wire the Shelly 1L Gen3 according to the wiring diagrams provided in the manual, paying close attention to the L (Live) and O (Output) connections.
- If using with low-power loads, install the Shelly Bypass for 1L in parallel to the light fixture as per its instructions.
- Restore power and add the device to your WiFi network using the Shelly Smart Control app or through its web interface.
- Configure desired schedules, scenes, or automation rules within the app or your preferred smart home platform.
Compatibility:
- Wireless: WiFi 802.11 b/g/n, Bluetooth.
- Protocols: MQTT, CoAP, HTTP, HTTPS, WebSockets.
- Voice Assistants: Amazon Alexa, Google Assistant.
- Smart Home Platforms: Home Assistant, SmartThings, Hubitat, KNX (via KNXnet/IP).
- Load Types: Compatible with most lighting loads, including incandescent, halogen, and dimmable LEDs (when used with bypass).
Care:
- Keep the device clean and free from dust and moisture.
- Use a dry or slightly damp cloth for cleaning. Do not use abrasive cleaners.
- Ensure adequate ventilation around the device, especially if installed in an enclosed space, to prevent overheating.