1. Einleitung
The SONOFF S31 WiFi Smart Plug is a compact and intelligent outlet designed to bring convenience and energy efficiency to your home. With features like energy monitoring, voice control, and remote access, it allows you to manage your electronic devices from anywhere. This manual provides detailed instructions for setting up, operating, and maintaining your S31 Smart Plug.

Figure 1: SONOFF S31 WiFi Smart Plug and its accompanying eWeLink app interface showing energy consumption data.
2. Sicherheitshinweise
Bitte lesen Sie vor der Verwendung dieses Produkts alle Sicherheitshinweise und Anweisungen sorgfältig durch, um einen sicheren Betrieb zu gewährleisten und Schäden zu vermeiden. Bewahren Sie diese Bedienungsanleitung zum späteren Nachschlagen auf.
- The SONOFF S31 Smart Plug is ETL/FCC/RoHS certified, ensuring compliance with safety and environmental standards.
- It features overload protection. You can set threshold values for power, current, and voltage within the app to ensure connected devices operate safely and prevent potential hazards like overheating or fire.
- Maximum rated current: 15A. Maximum power: 1800W. Do not exceed these limits.
- Ensure the plug is fully inserted into a standard 120V outlet.
- Zerlegen oder modifizieren Sie das Gerät nicht.
- Außerhalb der Reichweite von Kindern aufbewahren.

Figure 2: Key safety features of the SONOFF S31 Smart Plug, highlighting its certifications and protective mechanisms.
3. Produktmerkmale
The SONOFF S31 Smart Plug offers a range of features to enhance your smart home experience:
- Fernbedienung: Manage electronic devices from anywhere using the eWeLink app.
- Sprachsteuerung: Kompatibel mit Amazon Alexa und Google Home für freihändige Bedienung.
- Überwachung des Stromverbrauchs: Leistung, Stromstärke und Lautstärke in Echtzeit verfolgentage of your appliances. Store up to 100 days of electricity usage data and total electricity cost.
- Planung und Timer: Create schedules and set timers to automatically turn devices on and off at specific times.
- Überlastschutz: Set limits for power, current, and voltage to protect your devices.
- LAN-Steuerung: Control devices within your local network even without internet access.
- Aktienkontrolle: Share control of the smart plug with family members through the eWeLink app.

Abbildung 3: Überview of the smart features available with the SONOFF S31 Smart Plug.
4. Installationsanleitung
Befolgen Sie diese Schritte, um Ihren SONOFF S31 WLAN-Smart-Plug einzurichten:
- Laden Sie die eWeLink-App herunter: Suchen nach "eWeLink" on the App Store (iOS) or Google Play Store (Android), or scan the QR code provided in the quick start guide included with your product. Install the app on your smartphone or tablet.
- Registrieren und anmelden: Open the eWeLink app, register a new account if you don't have one, and then log in.
- Intelligente Steckdose anschließen: Insert the SONOFF S31 Smart Plug into any standard 120V wall outlet. Ensure the outlet is powered.
- Kopplungsmodus aktivieren: Press and hold the button on the smart plug for approximately 5 seconds until the LED indicator starts blinking rapidly. This indicates it's in pairing mode.
- Gerät in der App hinzufügen: Open the eWeLink app, tap the "+" icon in the upper right corner, and follow the on-screen instructions to add your device. You will need to select your 2.4GHz Wi-Fi network and enter its password. Note: The SONOFF S31 only supports 2.4GHz Wi-Fi networks. Ensure your device is connected to a 2.4GHz network during setup.
- Benennen Sie Ihr Gerät: Nach erfolgreicher Kopplung können Sie Ihrem Smart Plug einen Namen geben (z. B. „Wohnzimmer L“).amp," "Kaffeemaschine") zur einfachen Identifizierung und Steuerung.

Figure 4: Visual guide for the quick setup process of the SONOFF S31 Smart Plug.
5. Bedienungsanleitung
5.1. App-Fernsteuerung
After successful setup, you can control your smart plug from anywhere with an internet connection:
- Öffnen Sie die eWeLink-App.
- Tap on the device name to toggle it on or off.
- Access detailed settings, including power monitoring, schedules, and timers, by tapping on the device icon.

Figure 5: Remote control of the smart plug via the eWeLink app.
5.2. Sprachsteuerung
The SONOFF S31 is compatible with Amazon Alexa and Google Home. To enable voice control:
- Link your eWeLink account to your Amazon Alexa or Google Home app.
- Discover devices within the Alexa or Google Home app.
- Verwenden Sie Sprachbefehle wie:
- "Alexa, schalte [Gerätename] ein."
- "Hey Google, schalte [Gerätename] aus."

Figure 6: Hands-free voice control with Amazon Alexa and Google Home.
5.3. Überwachung des Stromverbrauchs
Monitor your energy usage directly from the eWeLink app:
- In the eWeLink app, select your S31 Smart Plug.
- Navigate to the "Consumption" or "Power Monitoring" section.
- View Echtzeitleistung (Watt), Stromstärke (Amps) und Bd.tage (Volt).
- Access historical data for up to 100 days to track trends and total electricity cost.

Figure 7: Detailed power consumption monitoring within the eWeLink app.
5.4. Overload Protection System
The S31 Smart Plug includes an overload protection system to safeguard your appliances and home:
- Within the eWeLink app, go to the device settings for your S31 Smart Plug.
- Locate the "Overload Protection System" (OPS) settings.
- Set maximum thresholds for power, current, and voltage. If the connected appliance exceeds these set limits, the smart plug will automatically turn off to prevent damage or fire.

Figure 8: Configuring overload protection settings for the SONOFF S31 Smart Plug.
6. Wartung
Um eine optimale Leistung und Langlebigkeit Ihres SONOFF S31 Smart Plug zu gewährleisten:
- Keep the device clean and dry. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or sprays.
- Setzen Sie das Gerät keinen extremen Temperaturen, Feuchtigkeit oder direkter Sonneneinstrahlung aus.
- Do not place heavy objects on the smart plug or connected cables.
- Regularly check for firmware updates in the eWeLink app to ensure you have the latest features and security enhancements.
7. Fehlerbehebung
If you encounter issues with your SONOFF S31 Smart Plug, refer to the following common problems and solutions:
| Problem | Mögliche Ursache | Lösung |
|---|---|---|
| Device cannot connect to Wi-Fi / Pairing fails. |
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| Das Gerät ist in der App offline. |
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| Sprachsteuerung funktioniert nicht. |
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8. Spezifikationen
| Spezifikation | Wert |
|---|---|
| Modellnummer | Staffel 31 |
| WiFi-Anforderung | Nur 2.4 GHz |
| Nennvolumentage | 120 V |
| Nennstrom | 15A Max |
| Maximale Leistung | 1800 W |
| AC-Frequenz | 2.4 Ghz (This seems to be a typo in source, likely meant Wi-Fi frequency) |
| Technische Daten | 3 x 1.57 x 1.3 Zoll |
| Artikelgewicht | 3.2 Unzen |
| Material | Polycarbonat (PC) |
| Zertifizierungen | ETL, FCC, RoHS |
Note: The maximum power may vary based on local voltage.
9. Garantie und Support
The SONOFF S31 WiFi Smart Plug comes with a 1 Jahr Garantie ab Kaufdatum.
For technical support, troubleshooting assistance, or warranty claims, please visit the official SONOFF webBesuchen Sie die Website oder kontaktieren Sie den Kundenservice. Bewahren Sie Ihren Kaufbeleg als Kaufnachweis für Garantieansprüche auf.
Weitere Informationen und Unterstützungsangebote finden Sie unter SONOFF Store auf Amazon.





