Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your LoraTap ZigBee 3.0 Tuya Smart Life Roller Shutter Curtain Light US Switch. This device allows for smart control of motorized blinds and lighting, integrating seamlessly with Tuya Smart Life, Amazon Alexa, and Google Home.
Video: Overview of the LoraTap ZigBee 3.0 Curtain Light Switch features and functionality.
Important Notes Before Installation
- Motor Compatibility: Ensure your motor is a 4-wire AC motor (Blue Wire, Brown Wire, Black Wire, Green/Yellow Wire). This switch is not compatible with DC motors.
- ZigBee Hub Requirement: A Tuya ZigBee 3.0 Hub is required for this switch to function. This switch is designed to work specifically with Tuya ZigBee Hubs and may not be compatible with other brands' ZigBee Hubs.

Image: Diagram illustrating the required 4-wire motor connection and emphasizing AC motor compatibility.
Package Contents
Please verify that all items are present in the box:
- 1 x ZigBee Curtain Light Switch (White or Black, depending on choice)
- 1 x User Guide
- 1 x Terminal
- 1 x Blue Wire

Image: Visual representation of the items included in the product package.

Image: Another view of the package contents, potentially showing a different color variant of the switch.
Setup and Installation
Physical Installation
- Power Off: Before beginning installation, ensure the main power supply to the circuit is turned off at the breaker.
- Wiring: Connect the switch according to the provided wiring diagram. The switch requires a Neutral Wire, L1, L2, L3, and an Earth Wire. Ensure your motor has 4 wires (Blue, Brown, Black, Green/Yellow).
- Mounting: The switch is designed for US standard wall boxes. The dimensions are 120mm*72mm*35mm.
- Power On: Once wiring is complete and secure, restore power to the circuit.

Image: Detailed wiring diagram for connecting the switch to power and a 4-wire motor. It also shows the physical dimensions of the switch (120mm x 72mm x 35mm).

Image: Illustration of compatible US standard wall box dimensions (83.5mm width) for installation.
App Pairing (Tuya Smart Life)
- Install App: Download and install the "Tuya Smart" or "Smart Life" app from your mobile device's app store.
- Add Device: Open the app and follow the instructions to add a new device. Select the ZigBee Curtain Switch.
- Connect to Hub: Ensure your Tuya ZigBee Hub is powered on and connected to your network. The switch will pair through the hub.
- Configuration: Follow in-app prompts to complete the setup, including naming the switch and assigning functions.

Image: Visualizing the Tuya ZigBee Mesh network, where the switch connects to a central ZigBee Hub for stable performance.
Operating Instructions
Touch Panel Control
The switch features a tempered glass touch panel for direct control.
- Curtain Control: Use the up arrow to open, the stop button to pause, and the down arrow to close the curtains.
- Light Control: Use the light bulb icon to turn the connected light ON or OFF.
Video: Demonstration of touch panel control for both curtain movement and light switching.
App Remote Control
Control your curtains and lights from anywhere using the Smart Life or Tuya app on your mobile device (2G, 3G, or 4G network).
- Curtain Movement: Use the "open", "pause", and "close" controls within the app interface.
- Light Toggle: Use the ON/OFF toggle for the light.
- Backlight Switch: The app allows you to enable or disable the backlight on the switch panel.

Image: App interface for remote control of curtains and lights, including backlight settings.
Video: Demonstration of app-based remote control for curtain and light functions.
Voice Control
The switch is compatible with Amazon Alexa and Google Home for hands-free voice commands.
- Curtain Commands: "Alexa/Hey Google, open the curtain," "Alexa/Hey Google, close the curtain," "Alexa/Hey Google, pause the curtain."
- Light Commands: "Alexa/Hey Google, turn on the light," "Alexa/Hey Google, turn off the light."

Image: Example voice commands for controlling curtains and lights using Amazon Alexa and Google Home.
Video: Demonstration of voice control for curtains and lights using an Amazon Alexa device.
Timer and Schedules
Set custom timers and schedules through the Smart Life or Tuya app to automate curtain and light operations.
- Scheduling: Program specific times for curtains to open or close, or lights to turn on or off.
- Cycle Options: Choose between one-time events or recurring schedules (e.g., daily, weekdays).

Image: App interface for setting up timers and schedules for automated control.
Video: Demonstration of setting up a timer schedule within the app to control curtain operation.
Maintenance
- Cleaning: Gently wipe the glass touch panel with a soft, dry cloth. Avoid abrasive cleaners or excessive moisture.
- Firmware Updates: Periodically check the Tuya Smart or Smart Life app for any available firmware updates for your switch to ensure optimal performance and security.
Troubleshooting
Common Issues and Solutions
- Switch not responding to touch or app commands:
- Check if the main power supply is on.
- Ensure the ZigBee Hub is powered on and connected to your network.
- Verify the switch is properly paired with the ZigBee Hub in the Tuya Smart/Smart Life app.
- If using app control, ensure your mobile device has a stable internet connection.
- Curtains/Lights not responding to voice commands:
- Confirm that your Amazon Alexa or Google Home device is properly linked to your Tuya Smart/Smart Life account.
- Check the device name in the voice assistant app; ensure it matches the command you are using.
- Verify the voice assistant device has a stable internet connection.
- Motor compatibility issues:
- This switch is only compatible with 4-wire AC tubular motors. It will not work with DC motors.
- Ensure all 4 wires (Blue, Brown, Black, Green/Yellow) are correctly connected as per the wiring diagram.
- Switch not pairing with ZigBee Hub:
- Make sure you are using a Tuya ZigBee Hub. This switch is not guaranteed to work with other brands' hubs.
- Ensure the switch is in pairing mode (refer to the app's instructions for specific pairing steps).
- Try moving the switch closer to the ZigBee Hub during the pairing process.
Specifications
| Feature | Detail |
|---|---|
| Model Number | SC400ZB-JD |
| Brand Name | LoraTap |
| Voltage | 100-250VAC, 50/60Hz |
| Max Load | 600W |
| Wireless Protocol | Tuya ZigBee 3.0 |
| App Name | Tuya, Smart Life |
| Voice Control | Google Home, Amazon Alexa |
| Switch Type | US Standard |
| Panel Type | Glass Touch Panel |
| Dimensions | 120mm*72mm*35mm |
| Material | Fireproof ABS |
| Certification | CE, RoHS, RED, EMC |
| Origin | Mainland China |
| Battery Included | No |
User Tips
- Home Assistant / Z2M Integration: While the product officially supports Tuya/Smart Life, some users have successfully integrated similar Tuya ZigBee devices with Home Assistant via Zigbee2MQTT (Z2M). This may require advanced technical knowledge and is not officially supported by LoraTap.
- Dedicated ZigBee Hub: For the most reliable performance, always use a dedicated Tuya ZigBee Hub as recommended. Using the switch without a compatible hub or with a non-Tuya hub will prevent smart functionality.
Warranty and Support
LoraTap products are manufactured under strict quality control standards (ISO9001:2015 certified factory). For technical support or warranty inquiries, please contact LoraTap customer service. Refer to the official LoraTap website for the most up-to-date support information.

Image: ISO Certification for manufacturing quality.

Image: LoraTap's recognition as a top brand, emphasizing product quality and customer service.





