1. Introduction
The SONOFF S61STPF EU 16A iPlug Matter WiFi Smart Socket is an advanced smart plug designed to bring convenience and energy efficiency to your home. Featuring Matter over WiFi technology, it seamlessly integrates with various smart home ecosystems including Apple Home, Google Home, Alexa, Home Assistant, and Samsung SmartThings. This smart socket offers robust features such as overload protection, energy monitoring, smart timing, and voice control, making your devices smarter and your life easier.
2. Safety Information
- Ensure the smart socket is used within its specified electrical ratings (Max load: 16A, Input: AC120V~ 50/60Hz).
- Do not disassemble or modify the device.
- Keep the device away from water and high humidity environments.
- Operate within the recommended working temperature range of -10°C to 40°C.
- The device features child protection, blocking access to pinholes to prevent accidental contact.
- The product is CE and RoHS certified, ensuring compliance with European safety and environmental standards.
- Utilize the built-in overload protection feature to prevent damage to connected appliances by setting appropriate current, voltage, and power thresholds.

3. Package Contents
Please check the package contents upon receipt:
- 1 x SONOFF S61STPF EU 16A iPlug Matter WiFi Smart Socket
- 1 x User Manual (this document)

4. Specifications
| Feature | Specification |
|---|---|
| Model Number | SONOFF S61STPF EU 16A iPlug Matter WiFi Smart Socket |
| Brand | SONOFF |
| Max Load | 16A |
| Input | AC120V~ 50/60Hz |
| Working Temperature | -10°C~40°C |
| Casing Material | PC V0 |
| Communication Method | Wi-Fi |
| Certification | CE, RoHS |
| Compatibility | Matter, Alexa, Google Home, HomeKit, Home Assistant, Samsung SmartThings |
| APP Control | Ewelink APP |
| Relay Lifespan | Up to 10,000 cycles |
| Dimensions (L x W x H) | 16 cm x 15 cm x 6 cm (approximate package dimensions) |
| Weight | 0.16 kg (approximate package weight) |

5. Setup Guide
5.1 Physical Installation
- Unpack the SONOFF S61STPF Smart Socket from its packaging.
- Plug the smart socket into a standard EU wall outlet.
- Plug the appliance you wish to control into the smart socket.



5.2 App Installation and Pairing (Ewelink App)
- Download the Ewelink App from your smartphone's app store (iOS or Android).
- Register or log in to your Ewelink account.
- Ensure your smartphone is connected to a 2.4GHz Wi-Fi network.
- Open the Ewelink App and tap the "+" icon to add a device.
- Follow the in-app instructions to put the smart socket into pairing mode (usually by pressing and holding the power button on the device for a few seconds until the indicator light blinks).
- Complete the pairing process as guided by the app.
5.3 Matter Integration
The SONOFF S61STPF supports Matter over WiFi, allowing integration with various Matter-compatible smart home ecosystems. To integrate with Matter, you will typically need a Matter hub (e.g., Apple HomePod Mini, Google Nest Hub, SmartThings Hub, or Home Assistant instance with Matter support).
- Ensure your Matter hub is set up and connected to your network.
- Follow the specific instructions provided by your Matter hub's app (e.g., Apple Home app, Google Home app) to add a new Matter device.
- The smart socket will typically enter a pairing mode that allows it to be discovered by the Matter hub.
- Once discovered, follow the on-screen prompts to complete the integration.

6. Operating Instructions
6.1 Manual Control
The smart socket features a physical power button. Press it once to toggle the connected appliance On or Off.
6.2 App Control (Ewelink App)
Once paired, you can control the smart socket remotely using the Ewelink App:
- Remote On/Off: Tap the power icon in the app to turn the connected appliance on or off from anywhere.
- Smart Timer: Set countdown timers, scheduled on/off times, or cyclical timers for your appliances. For example, set a countdown for 10 minutes to auto-off, or schedule an appliance to open for 30 minutes and close for 4 hours. You can also set random on/off times to simulate occupancy.
- Smart Scenes: Create custom automation rules based on conditions like time, device status, or environmental factors. For instance, turn on a light when you arrive home or turn off all devices when you leave.
- Energy Monitoring: View real-time and historical energy consumption data (Voltage, Current, Power, Consumption, Bill) for the connected appliance. The app supports setting electricity rates per unit for different time periods to accurately calculate costs.



6.3 Voice Control
Integrate your smart socket with voice assistants for hands-free control. Ensure your smart speakers (e.g., Amazon Echo, Google Home, Apple HomePod) are linked to your Ewelink or Matter ecosystem.
- Alexa: "Alexa, turn on [device name]."
- Google Home: "Hey Google, turn off [device name]."
- Apple HomeKit (Siri): "Hey Siri, turn on [device name]."

6.4 Overload Protection
The smart socket provides configurable overload protection to safeguard your appliances. You can set thresholds for current (up to 16A), voltage, and power within the Ewelink App. If the working current, voltage, or power exceeds the set threshold, the device will automatically power off to prevent damage.
- Access the "Protect Setting" in the Ewelink App.
- Adjust "MaxCurrent (A)", "MinVoltage (V)", and "MaxPower (W)" as needed. The default maximum current is 17A.

6.5 Overcharge Protection
For devices like smartphones or tablets, the smart socket offers overcharge protection. This feature helps prevent battery damage from frequent charging and discharging cycles.
- Navigate to "Charging Protection" in the Ewelink App.
- Adjust the "Charging Power" slider (e.g., from 3W to 20W) to set the desired charging limit.

6.6 Night Mode
To avoid disturbance from indicator lights during nighttime, you can schedule the smart socket's indicator lights to turn off.
- Access the device settings in the Ewelink App.
- Look for "Night Mode" or "Indicator Light" settings and configure a schedule for the lights to be off.
7. Maintenance
- Clean the smart socket regularly with a dry, soft cloth.
- Do not use harsh chemicals or abrasive cleaners.
- Ensure the device remains dry and is not exposed to moisture.
- Periodically check for firmware updates through the Ewelink App to ensure optimal performance and security.
8. Troubleshooting
- Device not responding:
- Check if the smart socket is properly plugged into the wall outlet and the appliance is plugged into the socket.
- Ensure your Wi-Fi network is active and the smart socket is within range.
- Restart the smart socket by unplugging it for 10 seconds and plugging it back in.
- Check the Ewelink App for device status and network connectivity.
- Cannot pair the device:
- Ensure your Wi-Fi network is 2.4GHz. The smart socket does not support 5GHz Wi-Fi.
- Make sure the smart socket is in pairing mode (indicator light blinking as per app instructions).
- Move the smart socket closer to your Wi-Fi router during the pairing process.
- Temporarily disable VPN or firewall settings on your phone if experiencing issues.
- Voice control not working:
- Verify that the smart socket is correctly linked to your voice assistant (Alexa, Google Home, HomeKit) account.
- Check the device name in your voice assistant app; ensure it's easy to pronounce and recognize.
- Ensure your smart speaker is online and functioning correctly.
- Energy monitoring data is inaccurate:
- Ensure the appliance connected is within the smart socket's rated capacity.
- Recalibrate the energy monitoring if the app provides such an option, or contact support if issues persist.
9. User Tips
- Group Control: For multiple smart sockets, consider grouping them in the Ewelink App for simultaneous control (e.g., "Living Room Lights").
- Firmware Updates: Regularly check for and install firmware updates via the Ewelink app to ensure your device has the latest features and security patches.
- Naming Devices: Use clear and descriptive names for your smart sockets in the app (e.g., "Coffee Maker," "Bedroom Lamp") to make voice control and automation easier.
- Matter for Cross-Platform: If you use multiple smart home platforms, leverage Matter integration to control the socket from any compatible system without needing separate apps for each.
- Energy Saving: Use the energy monitoring feature to identify power-hungry appliances and schedule them to turn off when not needed, saving electricity.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official SONOFF website or contact your retailer. Keep your purchase receipt as proof of purchase.