Smart control for curtains, blinds, and two circuits in one compact module
Sonoff has built a strong reputation in the AliExpress smart home niche by focusing on practical hardware that integrates cleanly with eWeLink, Alexa, and Google Home. The brand’s appeal is consistency: users usually know what they are getting, from app behavior to wiring logic, which matters when the device is hidden behind a wall switch.
DUALR3 follows that pattern with a dual relay design that can manage two loads independently or drive motorized shades in a dedicated curtain mode. It solves a common home-automation problem: how to add smart control without replacing the entire wall switch or motor setup, and the next question is how flexible those modes really are.
Three operating modes that change how you use the same hardware
The most useful detail here is the mode selection. Switch mode handles everyday on/off control, motor mode is built for roller shutters and curtains, and meter mode keeps the relay behavior fixed while tracking consumption, so the module adapts to different rooms instead of forcing one workflow.
For curtain automation, motor mode is the standout because it supports opening, closing, stopping, and position control through the app. That makes it more practical than a basic relay, since you can set a shade halfway for daylight control instead of relying on a single up-or-down command.
Why the dual relay layout matters in real rooms
Each relay can handle a separate device, which is useful in spaces where one module needs to cover two lights, two fans, or a light plus a shutter circuit. Users often mention that installation is straightforward and that calibration works well for blind motors, though the unit’s body is larger than some first-time installers expect.
That extra size is the trade-off for broader functionality, and it is worth checking the depth of the wall box before wiring. If the enclosure is shallow, the module may feel tight behind the switch, which is the main practical limit to keep in mind before planning a retrofit.
Power metering that helps spot waste, not just switch loads
Power metering is the feature that turns this from a convenience module into a small energy-monitoring tool. In meter mode, the connected load stays on while the app tracks consumption, which is useful for identifying appliances that draw more power than expected or for monitoring a motor’s usage over time.
That kind of data is especially helpful in a smart home setup where you want automation and visibility in the same device. It is not a full energy dashboard, but it gives enough insight to make better scheduling choices, and that leads naturally into compatibility with the rest of the ecosystem.
App, voice, and switch compatibility without a complicated workflow
According to customers, the eWeLink app setup is one of the cleaner parts of the experience, and several users report quick installation and working calibration after the first setup. The module also supports common wall switch types, which makes it easier to keep the original manual control while adding remote access.
Voice control through Alexa, Google, and Siri shortcuts is best treated as a convenience layer rather than the main interface. In daily use, the combination of wall switch, phone app, and automation scenes is what makes the module feel genuinely integrated, especially when paired with lighting routines or movie-night curtain scenes.
What the real-world feedback says about reliability
Real AliExpress feedback is strongly positive, with an average rating of 4.9/5 across 167 reviews, and the repeated themes are easy installation, solid shutter control, and dependable app pairing. That level of consistency suggests the device is not just feature-rich on paper; it is also behaving predictably in actual homes.
The most credible caution is physical fit, not software stability. If you are comfortable with mains wiring and you have room behind the switch, DUALR3 offers a capable upgrade path that feels more refined than many generic dual relays, and that is exactly what makes it stand out.
