SMTONOFF Tuya WIFI Multi-function Protector and Electricity Meter

1. Overview

The SMTONOFF Tuya WIFI Multi-function Protector is an all-in-one smart IoT device designed for AC110V or 220V, 50/60Hz, single-phase circuits with a rated current up to 63A. It is suitable for residential, commercial, and industrial buildings. This device functions as a smart meter to measure active energy consumption, offers optional prepayment features, and provides remote control capabilities for various protections.

Key functionalities include:

• Remote control and protection settings via mobile App (Tuya Smart, Smart Life).
• Protection against over/under voltage, overcurrent, and residual current (leakage).
• Automatic reclosing after protected conditions recover, enabling unattended management.
• Programmable timing control for efficient scheduling and electricity saving.
• Device sharing with family or team members.
• Local manual control without WiFi connectivity.
• Voice control through AI speakers like Amazon Alexa, Google Assistant, and Yandex Alice.

2. Safety Information

WARNING: Electrical shock hazard. Installation and servicing should only be performed by qualified personnel.

• Always disconnect power before installing or servicing the device.
• Ensure proper wiring according to local electrical codes and the provided wiring diagram.
• Do not operate the device if it is damaged or malfunctioning.
• This device is designed for single-phase 2P circuits. Do not use it in two-phase or three-phase installations.
• Keep the device away from water and extreme temperatures.

3. Product Features

Figure 1: Main Functions Overview

• Multiple Control Options: Remote control via mobile app (Tuya Smart, Smart Life), voice control with AI speakers (Alexa, Google Assistant, Yandex Alice), programmable timing schedules, and local manual control via buttons.
• Real-time Monitoring: Monitor electricity statistics (Current A, Voltage V, Leakage Current mA, Active Power kW, Energy Consumption kWh) directly on the device's LCD display and through the mobile app.
• Energy Metering: Measures positive active energy consumption. Supports daily, monthly, and yearly electricity statistics.
• Prepaid Metering Mode: Optional prepaid mode allows setting an energy balance, charging energy, and reviewing charge records. The device will auto-cut off if the balance is low.
• Adjustable Protections: Customizable thresholds for various safety features.
• Overcurrent Protection: Adjustable from 1A to 63A (default 63A). Can be disabled.
• Overvoltage Protection: Adjustable from 230V to 300V (default 275V). Can be disabled.
• Undervoltage Protection: Adjustable from 90V to 210V (default 110V). Can be disabled.
• Residual Current (Leakage) Protection: Adjustable from 10mA to 100mA (default 50mA).
• Auto-Reclosing: Automatically restores power after a protected fault (e.g., overvoltage, undervoltage, overcurrent) recovers. Note: If the protector trips 3 times due to leakage, it will not auto-reclose until the fault is manually fixed to ensure safety.
• Device Sharing: Share control of the device with other users through the mobile app.

4. Specifications

Figure 2: Product Dimensions

5. Package Contents

Upon opening the package, please verify that all components are present and undamaged:

• 1 x SMTONOFF Tuya WIFI Multi-function Protector and Electricity Meter
• 1 x User Manual (this document)

6. Installation

IMPORTANT: Installation must be performed by a qualified electrician in accordance with all national and local electrical codes.

1. Power Disconnection: Before starting any installation, ensure that the main power supply to the circuit is completely disconnected at the circuit breaker panel.
2. Mounting: Mount the device on a standard 35mm DIN-rail in your electrical distribution box.
3. Wiring: Connect the incoming power supply (Line and Neutral) to the 'IN' terminals and the load (Line and Neutral) to the 'OUT' terminals as indicated on the device. Ensure all connections are secure and tight.
• 'N' terminal: Neutral wire
• 'L' terminal: Live wire
4. Power Restoration: Once wiring is complete and verified, restore power to the circuit. The device's display should light up.

7. Setup

7.1 App Download

Download the "Tuya Smart" or "Smart Life" app from your smartphone's app store (available for iOS and Android).

7.2 Device Pairing (WiFi Connection)

Follow these steps to connect your device to the mobile app:

1. Power On: Ensure the protector is powered on.
2. Activate Pairing Mode: Long press the "WiFi" button on the device for 10 seconds until the WiFi signal indicator flashes rapidly.
3. Open App: Launch the Tuya Smart or Smart Life app on your mobile phone.
4. Add Device: The app should automatically detect the new device (Breaker). Tap "Add" or "Add Device". If not detected, manually add it by selecting "Breaker" under the "Electrical" category.
5. Connect to WiFi: Select your 2.4GHz WiFi network and enter the password.
6. Confirmation: Once successfully added, the app will confirm "Device(s) added successfully". Tap "Done".

Figure 3: App Pairing Steps

8. Operating Instructions

8.1 Manual Control

The device features physical buttons for local control:

• Power Button: Press to manually turn the circuit ON/OFF.
• SET Button: Used for navigating settings on the LCD display.
• Up/Down Arrows: Used to adjust values or navigate options on the LCD display.
• WiFi Button: Long press to enter WiFi pairing mode.

8.2 Remote Control via App

Figure 4: Remote Control Feature

Once paired, you can control the device from anywhere using the Tuya Smart/Smart Life app:

• Turn ON/OFF: Toggle the main switch in the app to control power to the connected load.
• Monitor Statistics: View real-time current, voltage, power, and energy consumption.
• Adjust Settings: Modify protection thresholds and timing schedules.

8.3 Voice Control

Figure 5: Voice Control Feature

Integrate the device with Amazon Alexa, Google Assistant, or Yandex Alice for voice commands. Refer to the respective AI speaker's app for integration instructions. Typical commands include "Alexa, turn on [device name]" or "Hey Google, turn off [device name]".

8.4 Timing Schedule

Figure 6: Schedule Management

Figure 7: Timing Schedule Feature

Set up programmable schedules through the app to automate power ON/OFF times for connected appliances. This feature helps in energy saving and efficient device management.

8.5 Electricity Metering and Prepaid Mode

Figure 8: Electricity Measuring Interface

Figure 9: Expense Management / Prepaid Mode

The app provides detailed electricity statistics. You can also enable a prepaid metering mode:

1. Navigate to the "Expense" section in the app.
2. Toggle "Switch prepayment" to ON.
3. Set the "Balance energy" (e.g., 100 kWh).
4. To add more energy, tap "charge energy" and input the desired kWh.
5. The device will automatically cut off power if the energy balance reaches zero.

8.6 Protection Settings

Figure 10: Adjustable Protections Interface

Adjust protection thresholds via the app's "Setting" menu:

• Overcurrent Alarm: Set the maximum current (1-63A).
• Overvoltage Alarm: Set the maximum voltage (230-300V).
• Undervoltage Alarm: Set the minimum voltage (90-210V).
• Leakage Current Set: Set the maximum leakage current (10-100mA).
• You can also enable/disable "mute setting" and "trip setting" for alarms.

8.7 Device Sharing

Figure 11: Device Sharing Feature

To share control of the device with others, navigate to the device settings in the app and select the "Share Device" option. You can invite other Tuya Smart/Smart Life users to control the protector.

9. Maintenance

• Regularly check the device for any visible damage or loose connections.
• Keep the device clean and free from dust and moisture.
• Ensure the surrounding area is well-ventilated to prevent overheating.
• Periodically check for app updates to ensure optimal performance and security.

10. Troubleshooting

• Device not connecting to WiFi: Ensure your WiFi network is 2.4GHz. Check if the WiFi signal indicator is flashing rapidly during pairing. Verify your WiFi password.
• Device not responding to app commands: Check your internet connection and the device's WiFi status. Restart the app and/or the device.
• Device trips frequently: Review the protection settings in the app. If it's a leakage trip, remember the device will not auto-reclose after 3 consecutive trips until the fault is manually addressed for safety. Investigate the cause of the leakage.
• No power to load: Check the device's ON/OFF status in the app and manually. Verify the energy balance if prepaid mode is enabled.

11. User Tips

• For optimal performance and safety, ensure your WiFi network is stable and within range of the device.
• Regularly monitor your energy consumption through the app to identify potential energy savings.
• If using the prepaid function, keep an eye on your energy balance to avoid unexpected power cuts.
• This device is designed for single-phase 2P installations. It is not recommended for two-phase installations.

12. Warranty and Support

For warranty information and technical support, please refer to the seller's policies or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.