🛠️Using Two Shelly Plus Plug S to Extend Wi-Fi Coverage and Create a Connection Backup
In the smart-home world, the stability and coverage of the Wi-Fi network is everything. If you have Shelly devices, like the versatile Shelly Plus Plug S or any other Shelly Plus, Gen3 or Gen4, you can take advantage of their advanced features to improve connectivity between devices. In this article, we show you how two Shelly Plus Plug S can work together to:
✅ Extend the Wi-Fi range.
✅ Act as a backup if your main network fails.
✅ Ensure the continuity of your automations.
📶 Did you know a Shelly can connect to another Shelly's Wi-Fi?
Shelly Plus Plug S devices can work in Wi-Fi client mode and can also act as an Access Point (AP). This means one Shelly can broadcast its own Wi-Fi network and another Shelly can connect to it, creating a smart mesh or a backup network.
🔌 Scenario: Two Shelly Plus Plug S in action
Let's imagine the following:
- Shelly A is connected to your main router by Wi-Fi.
- Shelly B, located farther away, has a weak or intermittent signal.
- If the main Wi-Fi network fails, Shelly B can connect to Shelly A's AP and keep working.
🧩 Step by Step: Set up a Shelly as a backup or repeater
1. Set up Shelly A (main)
- Connect it to the usual Wi-Fi network.
- Access the device's web interface (by IP or through the Shelly app).
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Enable the Access Point:
- Go to Internet & Security > Wi-Fi Mode.
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Enable Access Point (AP) Mode.
- Set the SSID and password that Shelly A will broadcast.
2. Set up Shelly B (client)
- Temporarily bring it close to Shelly A for setup.
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In Wi-Fi Settings, add the two networks:
- Primary: your main Wi-Fi network.
- Secondary: the network broadcast by Shelly A (its AP).
- Shelly B will connect to the main network first. If it fails, it will automatically connect to Shelly A's AP network.
🧪 What benefits do you get?
- Automatic redundancy: You never lose control of the device.
- Greater range: You can cover areas with weak Wi-Fi without installing repeaters.
- No additional hardware: You do it with just two Shelly Plug S.
💡 Extra tip:
You can check which network each device is connected to by entering its IP in the browser or using the Shelly app. If you test by turning off your main router, you'll see how Shelly B automatically connects to Shelly A's AP.✅ Conclusion
With just two Shelly Plus Plug S, you can create a more robust, resilient and flexible network for your smart home. It's a perfect solution for large houses, basements, terraces or simply as an automatic backup against network outages.Would you like us to set it up for you or do you need help? Contact us at ShellyMadrid.com!
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