1. Product Overview
The SURFOU Smart WiFi Plug Type E (Model BSD33-F) allows you to control your electronic devices remotely using your smartphone. It integrates with popular voice assistants and offers features such as scheduling, timers, and energy consumption monitoring. This manual provides detailed instructions for setup, operation, and maintenance.

Image 1.1: The SURFOU Smart WiFi Plug Type E, showcasing its compact design and compatibility with Google Assistant, SmartThings, and Amazon Alexa. A smartphone screen next to it illustrates the scheduling function within the control application.
2. Safety Information
Please read all safety instructions before using the device to prevent injury or damage. Keep this manual for future reference.
- Ensure the plug is used within its specified electrical ratings: 16A, 230V, Max. 3680W.
- Do not disassemble or modify the device.
- Avoid exposure to water or humid environments.
- Keep out of reach of children. The plug features hidden contacts for child protection.
- The device includes protection against short-circuits, overcurrents, surges, and overheating.

Image 2.1: An exploded view diagram illustrating the internal safety mechanisms of the smart plug, including protection against short-circuits, overcurrents, surges, and overheating.

Image 2.2: A child reaching for a smart plug in a wall socket, demonstrating the child protection design with hidden contacts to prevent accidental electric shock.
3. Setup Guide
3.1. Download the App
The SURFOU Smart WiFi Plug operates with the Tuya Smart or Smart Life application. Download the app from your device's app store (Google Play Store for Android or Apple App Store for iOS).
- Search for "Tuya Smart" or "Smart Life" in your app store.
- Download and install the application.
- Register or log in to your account.
3.2. Connect to Wi-Fi
The smart plug requires a 2.4 GHz Wi-Fi network for connection. It is not compatible with 5 GHz Wi-Fi networks.
- Plug the SURFOU Smart WiFi Plug into a standard wall outlet.
- Open the Tuya Smart or Smart Life app.
- Tap the "+" icon in the top right corner to add a device.
- Select "Electrical Outlet" or "Socket (Wi-Fi)".
- Follow the in-app instructions to put the device into pairing mode (usually by pressing and holding the power button on the plug until the indicator light blinks rapidly).
- Enter your 2.4 GHz Wi-Fi network name and password.
- Wait for the app to connect to the device. Once connected, you can rename the plug for easier identification.
4. Operating Instructions
4.1. Remote Control
Once connected, you can turn the plug on or off from anywhere using the Tuya Smart/Smart Life app on your smartphone or tablet.
4.2. Scheduling and Timer Function
Set up custom schedules and timers to automate your devices.
- In the app, select your smart plug.
- Tap on "Schedule" or "Timer" option.
- Set desired ON/OFF times, repeat days, and specific actions.
- Save your settings.

Image 4.1: A coffee machine plugged into the smart plug, with the accompanying smartphone app showing the timer function being set for 7:30 AM, demonstrating automated control.
4.3. Voice Control Integration
The SURFOU Smart WiFi Plug is compatible with Amazon Alexa, Google Assistant, and SmartThings.
- Ensure your voice assistant device (e.g., Amazon Echo, Google Home) is set up and connected to the same Wi-Fi network.
- Open the Alexa, Google Home, or SmartThings app.
- Enable the "Tuya Smart" or "Smart Life" skill/service.
- Link your Tuya Smart/Smart Life account.
- Discover devices. Your smart plug should appear.
- You can now control the plug using voice commands, e.g., "Alexa, turn on the lamp" or "Hey Google, turn off the coffee maker."

Image 4.2: An illustration of voice control in action, with a person speaking "Alexa, turn on the lamp" to a voice assistant device, demonstrating seamless integration.
4.4. Energy Monitoring
The smart plug features an integrated power meter to track electricity consumption.
- In the Tuya Smart/Smart Life app, select your smart plug.
- Look for the "Power Statistics" or "Energy Monitoring" section.
- View real-time power (Watts), current (Amps), voltage (Volts), and total energy consumption (kWh).

Image 4.3: A kitchen environment showing multiple smart plugs connected to various appliances. A smartphone displays a graph of electricity usage, highlighting the energy monitoring capability.
4.5. Group Control
Group multiple smart plugs or devices together for simultaneous control.
- In the Tuya Smart/Smart Life app, go to "Smart" or "Scenes".
- Create a new group and add the desired smart plugs.
- You can now turn all grouped devices on or off with a single command or tap.

Image 4.4: A kitchen setting where multiple smart plugs are connected to different appliances (e.g., lights, oven hood). A smartphone screen shows a single control interface, illustrating the group control feature to manage all devices simultaneously.
5. Maintenance
The SURFOU Smart WiFi Plug requires minimal maintenance.
- Keep the device clean and dry. Wipe with a soft, dry cloth if necessary.
- Do not use harsh chemicals or abrasive cleaners.
- Ensure the firmware of the smart plug and the app are updated to the latest versions for optimal performance and security. Check for updates within the Tuya Smart/Smart Life app.
6. Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Device cannot connect to Wi-Fi. | Incorrect Wi-Fi band (5 GHz), wrong password, weak signal, or plug not in pairing mode. |
|
| Voice control not working. | Skill not enabled, accounts not linked, or incorrect device name. |
|
| Plug is unresponsive in the app. | Wi-Fi disconnection, app issue, or device malfunction. |
|
| Energy monitoring data is inaccurate or missing. | Temporary app glitch or device error. |
|
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | BSD33-F |
| Brand | SURFOU |
| Dimensions (L x W x H) | 5.2 x 5.2 x 8.5 cm |
| Weight | 20 grams |
| Operating Voltage | 230 Volts |
| Current Rating | 16 Amperes |
| Maximum Power | 3680 Watts |
| Wi-Fi Compatibility | 2.4 GHz only (IEEE 802.11 b/g/n) |
| App Compatibility | Tuya Smart / Smart Life |
| Voice Assistant Compatibility | Amazon Alexa, Google Assistant, SmartThings |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Country of Origin | China |
8. Warranty and Support
Specific warranty information for the SURFOU Smart WiFi Plug (Model BSD33-F) is not provided in the product details. For warranty claims or technical support, please refer to the retailer where the product was purchased or contact SURFOU customer service directly through their official channels, if available.
Please note that the product does not support "Tasmota", "Homekit", or "Matter" platforms.