1. Introducció
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. Informació de seguretat
Si us plau, llegiu i comprengui totes les instruccions de seguretat abans de la instal·lació i el funcionament. Si no segueix aquestes instruccions, es poden produir descàrregues elèctriques, incendis o altres perills.
- Installation should be performed by a qualified electrician or professional.
- Assegureu-vos que la font d'alimentació estigui desconnectada abans de la instal·lació o el manteniment.
- No exposeu el dispositiu a la humitat ni a temperatures extremes.
- Operate the device within its specified electrical ratings (100-240V AC, 10A Max).
- Mantenir fora de l'abast dels nens.
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).
- Connectivitat Wi-Fi: Connects to your home Wi-Fi network for remote control via the eWeLink app.
- Mode de 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).
- Mode de canvi: Can also function as a standard smart switch for lights and other appliances.
- Control de veu: Compatible amb Amazon Alexa i Google Assistant per a un funcionament amb mans lliures.
- Scheduling & Scenes: 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
| Característiques | DUALR3 | DUALR3 Lite |
|---|---|---|
| Power metering (monitoring, real-time & historical power statistics) | ✓ | ✗ |
| Protecció de sobrecàrrega | ✓ | ✗ |
| Roller motor stroke calibration | ✓ | ✗ |
| Progress bar control with percentage (motor position display) | ✓ | ✗ |
| Mode mesurador | ✓ | ✗ |
| Mode motor | ✓ | ✓ |
| External switch control in both Motor and Switch Mode | ✓ | ✓ |
| Canvi de mode | ✓ | ✓ |
Note: The roller motor requires the travel limit function.
4. Instal·lació i configuració
Before proceeding with installation, ensure the main power supply is turned off at the circuit breaker to prevent electric shock.
4.1 Cablejat
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).
- Entrada: Connect Live (L) and Neutral (N) wires from your power supply.
- Sortida: Connect Live Out 1 (L Out 1) and Live Out 2 (L Out 2) to your devices or motor.
- Interruptor extern: Connect your existing wall switch to S1 and S2 terminals for manual control.
Important: Ensure all connections are secure and insulated. If you are unsure about electrical wiring, consult a qualified electrician.
4.2 Emparellament amb l'aplicació eWeLink
- Baixeu l'aplicació eWeLink des de l'App Store o Google Play.
- Registra't i inicia la sessió al teu compte d'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.
- A l'aplicació eWeLink, toca la icona "+" per afegir un dispositiu.
- Segueix les instruccions que apareixen a la pantalla per connectar el dispositiu a la teva xarxa Wi-Fi de 2.4 GHz.
- Once connected, you can name your device and assign it to a room.
4.3 Tipus de commutadors 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. Instruccions de funcionament
Once installed and paired, you can control your DUALR3 Lite using the eWeLink app, voice commands, or your existing wall switches.
5.1 Control d'aplicacions
Open the eWeLink app to access your DUALR3 Lite. You can:
- Encendre/apagar els dispositius.
- Control motorized devices (e.g., open/close curtains, adjust position).
- Establir horaris i temporitzadors.
- Create smart scenes to automate actions based on conditions (e.g., time, other device status).

Figure 5: Remote Control via eWeLink App
5.2 Control de veu
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."
- "Ei Google, apaga el llum del dormitori."

Figure 6: Voice Control Example
5.3 Programació
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. Manteniment
To ensure optimal performance and longevity of your DUALR3 Lite module:
- Mantingueu el dispositiu net i lliure de pols. Feu servir un drap sec i suau per netejar-lo.
- Eviteu exposar el mòdul a aigua o altres líquids.
- Regularly check the eWeLink app for firmware updates to ensure you have the latest features and security enhancements.
- No intenteu desmuntar ni reparar el dispositiu vosaltres mateixos. Poseu-vos en contacte amb el servei d'atenció al client si sorgeixen problemes.
7. Solució De Problemes
If you encounter issues with your DUALR3 Lite, consider the following common solutions:
- Dispositiu fora de línia: 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 es pot emparellar: 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 respon: 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 per veu 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 intermitent: 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. Especificacions
| Especificació | Detall |
|---|---|
| Número de model | DUALR3 Lite |
| Dimensions del producte | 1.3 x 2.68 x 4.02 polzades; 4.8 unces |
| Fabricant | SONOFF |
| Mode d'operació | Interruptor intel·ligent |
| Valoració actual | 10 Amps |
| Vol. Operatiutage | 120 Volts (Supports 100-240V AC) |
| Tipus de contacte | Sense toc |
| Tipus de connector | Crimpar |
| Tipus de canvi | Rocker |
| Terminal | Cargol |
| Material | coure |
| Estàndard sense fils | Wi-Fi IEEE 802.11 b / g / n 2.4 GHz |
9. Garantia i Suport
Els productes SONOFF solen incloure una garantia limitada. Consulteu la targeta de garantia inclosa amb el producte o visiteu el lloc web oficial de SONOFF. weblloc web per obtenir informació detallada sobre els termes i condicions de la garantia.
For technical support, troubleshooting, or any inquiries, please contact SONOFF customer service through their official website or the eWeLink app's support section.
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