1. Introducción
The SONOFF DUALR3 Lite is a dual-relay Wi-Fi smart switch module designed to transform traditional switches and motorized devices into smart ones. It supports two-way control and is compatible with various smart home platforms, including Alexa and Google Assistant. This module is ideal for automating curtains, blinds, roller shutters, and other motorized facilities, offering both motor mode and switch mode functionalities.
The DUALR3 Lite has received TUV certifications, ensuring a safer and more reliable product for your home automation needs.

Figure 1: SONOFF DUALR3 Lite Smart Switch Modules
2. Información de seguridad
Lea y comprenda todas las instrucciones de seguridad antes de la instalación y el funcionamiento. El incumplimiento de estas instrucciones podría provocar descargas eléctricas, incendios u otros peligros.
- La instalación debe ser realizada por un electricista o profesional calificado.
- Asegúrese de que la fuente de alimentación esté desconectada antes de la instalación o el mantenimiento.
- No exponga el dispositivo a la humedad ni a temperaturas extremas.
- Operate the device within its specified electrical ratings (100-240V AC, 10A Max).
- Mantener fuera del alcance de los niños.
3. Product Features and Applications
The DUALR3 Lite offers versatile control for various motorized and electrical appliances:
- Control de relé dual: Independently control two devices or a single motorized device with two directions (e.g., open/close).
- Conectividad Wi-Fi: Connects to your home Wi-Fi network for remote control via the eWeLink app.
- Modo motor: Specifically designed for 100-240V AC motors, enabling smart control of curtains, blinds, roller shutters, awnings, and more. Supports four-wire AC motors (GND, Neutral, Forward, Reverse).
- Modo de cambio: Can also function as a standard smart switch for lights and other appliances.
- Control de voz: Compatible con Amazon Alexa y Google Assistant para operación manos libres.
- Programación y escenas: Set timers, schedules, and create smart scenes for automated operation.
- Existing Switch Compatibility: Retains functionality with your existing wall switches.

Figure 2: DIY Automated Motorized Facilities with DUALR3 Lite
DUALR3 Lite vs. DUALR3 Comparison
The DUALR3 Lite is a streamlined version of the DUALR3. Key differences are outlined below:

Figure 3: Feature Comparison: DUALR3 vs. DUALR3 Lite
| Características | DUALR3 | DUALR3 Lite |
|---|---|---|
| Power metering (monitoring, real-time & historical power statistics) | ✓ | ✗ |
| Protección contra sobrecarga | ✓ | ✗ |
| Roller motor stroke calibration | ✓ | ✗ |
| Progress bar control with percentage (motor position display) | ✓ | ✗ |
| Modo medidor | ✓ | ✗ |
| Modo motor | ✓ | ✓ |
| External switch control in both Motor and Switch Mode | ✓ | ✓ |
| Modo de cambio | ✓ | ✓ |
Note: The roller motor requires the travel limit function.
4. Instalación y configuración
Antes de continuar con la instalación, asegúrese de que el suministro de energía principal esté apagado en el disyuntor para evitar descargas eléctricas.
4.1 Cableado
The DUALR3 Lite module requires connection to live, neutral, and load wires. For motorized applications, it connects to the motor's forward and reverse control wires. Refer to the wiring diagram provided in the product packaging or the eWeLink app for detailed instructions specific to your application (e.g., curtain motor, light switch).
- Aporte: Connect Live (L) and Neutral (N) wires from your power supply.
- Producción: Connect Live Out 1 (L Out 1) and Live Out 2 (L Out 2) to your devices or motor.
- Interruptor externo: Connect your existing wall switch to S1 and S2 terminals for manual control.
Importante: Ensure all connections are secure and insulated. If you are unsure about electrical wiring, consult a qualified electrician.
4.2 Emparejamiento con la aplicación eWeLink
- Descargue la aplicación eWeLink desde App Store o Google Play.
- Regístrese e inicie sesión en su cuenta eWeLink.
- Power on the DUALR3 Lite module. It will automatically enter pairing mode (indicated by a blinking LED). If not, press and hold the pairing button for 5 seconds.
- In the eWeLink app, tap the '+' icon to add a device.
- Siga las instrucciones en pantalla para conectar el dispositivo a su red Wi-Fi de 2.4 GHz.
- Una vez conectado, puedes nombrar tu dispositivo y asignarlo a una habitación.
4.3 Tipos de interruptores compatibles
The DUALR3 Lite is designed to work with various existing switch types, allowing you to retain manual control alongside app control.

Figure 4: Compatible Existing Switch Types
5. Instrucciones de funcionamiento
Once installed and paired, you can control your DUALR3 Lite using the eWeLink app, voice commands, or your existing wall switches.
5.1 Control de aplicaciones
Open the eWeLink app to access your DUALR3 Lite. You can:
- Encender/apagar dispositivos.
- Control motorized devices (e.g., open/close curtains, adjust position).
- Establecer horarios y temporizadores.
- Create smart scenes to automate actions based on conditions (e.g., time, other device status).

Figura 5: Control remoto a través de la aplicación eWeLink
5.2 Control de voz
Integrate your DUALR3 Lite with Amazon Alexa or Google Assistant for convenient voice control. Link your eWeLink account in the respective assistant app and use commands such as:
- "Alexa, open the living room curtain."
- "Ok Google, apaga la luz del dormitorio".

Figura 6: Control de voz Example
5.3 Programación
Set up schedules to automatically open or close your curtains, blinds, or other devices at specific times. This feature enhances comfort and energy efficiency.

Figure 7: Scheduling for Automated Comfort
6. Mantenimiento
To ensure optimal performance and longevity of your DUALR3 Lite module:
- Mantenga el dispositivo limpio y sin polvo. Utilice un paño seco y suave para limpiarlo.
- Evite exponer el módulo al agua u otros líquidos.
- Regularly check the eWeLink app for firmware updates to ensure you have the latest features and security enhancements.
- No intente desmontar ni reparar el dispositivo usted mismo. Contacte con atención al cliente si surge algún problema.
7. Solución de problemas
If you encounter issues with your DUALR3 Lite, consider the following common solutions:
- Dispositivo sin conexión: Check your Wi-Fi connection. Ensure the module is within range of your 2.4GHz Wi-Fi router. Restart the module and your router.
- No se puede emparejar: Ensure the device is in pairing mode (blinking LED). Verify your Wi-Fi password and network type (only 2.4GHz is supported). Try resetting the device by holding the pairing button for 5 seconds.
- El motor no responde: Check wiring connections to the motor. Ensure the module is in 'Motor Mode' in the eWeLink app settings. Verify the motor itself is functioning correctly.
- El control de voz no funciona: Ensure your eWeLink account is correctly linked to Alexa or Google Assistant. Check the device name in the eWeLink app and use clear voice commands.
- Control intermitente: This could be due to weak Wi-Fi signal. Consider relocating your router or adding a Wi-Fi extender.
For further assistance, refer to the eWeLink app's help section or contact SONOFF customer support.
8. Especificaciones
| Especificación | Detalle |
|---|---|
| Número de modelo | DUALR3 Lite |
| Dimensiones del producto | 1.3 x 2.68 x 4.02 pulgadas; 4.8 onzas |
| Fabricante | SONOFF |
| Modo de operación | Interruptor inteligente |
| Calificación actual | 10 Amps |
| Vol de funcionamientotage | 120 Volts (Supports 100-240V AC) |
| Tipo de contacto | Tomar temperatura |
| Tipo de conector | Rizar |
| Tipo de interruptor | Balancín |
| Terminal | Tornillo |
| Material | Cobre |
| Estándar inalámbrico | Wi-Fi IEEE 802.11 b / g / n 2.4GHz |
9. Garantía y soporte
Los productos SONOFF suelen tener una garantía limitada. Consulte la tarjeta de garantía incluida con el producto o visite el sitio web oficial de SONOFF. webSitio para conocer los términos y condiciones detallados de la garantía.
For technical support, troubleshooting, or any inquiries, please contact SONOFF customer service through their official websitio o la sección de soporte de la aplicación eWeLink.
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