1. Introduction
Thank you for choosing the LoraTap Tuya Smart Curtain Switch. This device allows you to control your electric roller shutters, window blinds, or project screens through various methods including touch control, a dedicated remote, a smartphone application (Smart Life/Tuya App), and voice commands via Google Home or Amazon Alexa. This manual provides detailed instructions for installation, operation, and troubleshooting to ensure optimal performance and safety.

2. Safety Information
Please read all safety warnings and instructions carefully before installation and operation to prevent injury or damage.
- Electrical Safety: Installation should be performed by a qualified electrician or in accordance with local electrical codes. Ensure power is disconnected at the circuit breaker before installation.
- Motor Compatibility: This switch is designed for motors with an input/output voltage of 100-250VAC, 50/60Hz. It cannot work with DC motors.
- Wiring Requirements: Your motor must have 4 wires (Blue Wire, Brown Wire, Black Wire, Green/Yellow Wire) for proper connection.
- App Control Precaution: Before using the app to control the shutter, ensure the wall manual switch is in the 'STOP' position. This protects the motor from conflicting commands.
- Remote Compatibility: The RF remote control included is specifically designed to work with the RF+WiFi version of this curtain switch. It is not compatible with WiFi-only curtain switches.
3. Package Contents
Verify that all items are present and in good condition upon unboxing:

- 1 x 503 Smart Curtain Switch (White)
- 1 x 3-button Remote Control
- 1 x User Guide (English or Italian)
- 1 x Terminal Connector (for neutral lines)
- 1 x Blue Wire (for switch installation)
- 2 x Mounting Screws
4. Specifications
| Feature | Detail |
|---|---|
| Input Voltage | 100-250 VAC, 50/60Hz |
| Wiring | Neutral Wire, L1, L2, Earth Wire |
| Max Load | Below 600 W |
| Wi-Fi Standard | 2.4 GHz 802.11 b/g/n (5Ghz not supported) |
| RF Protocol | 868Mhz |
| Standby Consumption | Below 0.5W |
| Dimensions | 120mm x 72mm x 39mm |
| APP Name | Smart Life, Tuya |
| Support System | Android and iOS |
| Voice Control | Google Home, Amazon Alexa |
| Remote Control Range | Up to 30m |
| Switch Type | Touch switch with glass panel |
| Works With | Roller Shutter, Blinds, Project Screen Sunscreen |
| Switch Shape | US Type, Rectangle |
| Certification | CE, RoHS, FCC |
5. Setup
5.1 Wiring Diagram
Before proceeding, ensure the main power supply is turned off at the circuit breaker. Connect the wires as shown in the diagram below. This switch requires a Neutral Wire, L1, L2, and Earth Wire connection.

Important Wiring Notes:
- The motor must have 4 wires: Blue (Neutral), Brown (Live 1), Black (Live 2), and Green/Yellow (Earth).
- Ensure all connections are secure to prevent electrical hazards.
5.2 Junction Box Compatibility
The switch is designed to fit standard junction boxes in various countries, including US and Italy, with a screw distance of 83.5mm (Gewiss shape).

5.3 App Installation
- Download the 'Smart Life' or 'Tuya' app from the Apple App Store (for iOS) or Google Play Store (for Android).
- Register or log in to your account.
5.4 Device Pairing
- After wiring and restoring power, the LED on the 'Open' button of the switch will be on, indicating it's in pairing mode.
- Open the Smart Life/Tuya app and tap '+' to add a new device.
- Follow the in-app instructions to connect the switch to your 2.4GHz Wi-Fi network. (5GHz Wi-Fi is not supported).
- Once successfully paired, the LED on the 'Open' button will turn off.
6. Operating Instructions
6.1 Manual Touch Control
The touch panel on the switch allows for direct control:
- Tap the 'Up Arrow' button to open the curtain.
- Tap the 'Pause' button to stop the curtain.
- Tap the 'Down Arrow' button to close the curtain.
6.2 App Control (Smart Life/Tuya App)
The app provides comprehensive control and scheduling features:
- Open/Close/Pause: Use the virtual buttons in the app interface to control your curtains.
- Timer and Schedule: Create schedules to automatically open or close your curtains at specific times (e.g., open at 7:00 AM, close at 7:00 PM).
- Set Working Time / Percentage: Adjust the switch operation time (10-120 seconds) in the app based on your shutter's height. This allows you to set a specific percentage for opening or closing without multiple taps.
- Group Function: Create groups within the app to manage multiple curtain switches simultaneously.
- Device Sharing: Share control of the device with family members through the app.



6.3 Remote Control
The included 3-button remote allows for convenient control from up to 30 meters away.
- Press the 'Up Arrow' button to open the curtain.
- Press the 'Pause' button to stop the curtain.
- Press the 'Down Arrow' button to close the curtain.

The remote can control multiple RF+WiFi switches (up to 10) simultaneously if grouped.

6.4 Voice Control
Integrate with Amazon Alexa or Google Home for hands-free control:
- Link your Smart Life/Tuya account to your Alexa or Google Home app.
- Use commands like: "Alexa, open the curtain switch" or "Hey Google, close the blinds."


Video demonstrating app and remote control functionality.
7. Maintenance
- Clean the glass panel with a soft, dry cloth. Avoid abrasive cleaners or solvents.
- Regularly check wiring connections for any signs of wear or looseness.
- Ensure the switch is not exposed to excessive moisture or extreme temperatures.
8. Troubleshooting
- Switch not responding to App: Ensure the wall manual switch is in the 'STOP' position. If it's in 'Open' or 'Close', the app control may be overridden. Check your Wi-Fi connection (must be 2.4GHz).
- Remote not controlling switch: Verify that the switch is an RF+WiFi version. The remote is not compatible with WiFi-only switches. Ensure the remote is within the 30m operating range.
- Motor not moving: Check all wiring connections according to the diagram. Ensure the motor is an AC type and has 4 wires. Verify the power supply to the switch.
- LED on 'Open' button always on after setup: This indicates the switch is still in pairing mode or has lost its Wi-Fi connection. Re-pair the device with the app. Once successfully added, the LED will turn off.
9. User Tips
- Optimize Shutter Movement: Utilize the 'Set Working Time' feature in the app to precisely control how far your curtains open or close. This prevents unnecessary motor operation and allows for partial opening (e.g., 50% closed).
- Silent Operation at Night: The switch panel's LED does not stay illuminated unless touched, ensuring it won't disturb your sleep.
- Family Convenience: Use the 'Device Sharing' feature in the app to allow all household members to control the curtains from their own smartphones.
- Automate Your Home: Leverage the scheduling feature to automate your curtains based on your daily routine, enhancing comfort and energy efficiency.


10. Warranty and Support
LoraTap products are manufactured under strict quality control standards. For any technical assistance, troubleshooting, or warranty inquiries, please refer to the contact information provided in your physical user guide or visit the official LoraTap website for support resources.





