WiFi Smart Curtain Switch with Power Metering TUV Certified, DUALR3 Dual Relay DIY Curtain, Blinds, Roller Shutter,Two Way Smart Switch,Compatible with Alexa&Google Home(1 Pack)

I mounted this inside an wall outlet to monitor power usage of a PC. Initially, it would not automatically reconnect to Wi-Fi after a grid power failure. The only way to reconnect, was to open the wall outlet and push the reset button on the Sonoff. But, the latest firmware update seems to have fixed this issue and it's been working great. I use this Home Assistant.

I used this product for controlling electric heat relays and it works great. The control software is easy to use and integrates with many of the popular home automation systems. I have used SONOFF products for several years in many different applications and have had no issues.

Great device I use it to control the curtains at home; 1- To open/close as needed 2- Close all curtains when I go out in one button 3- Timers; like to open bedrooms curtains (partially) with the alarm. Also close them in the evening I didn't need to call the support nor did I use it with Alexa (so far) so I can't rate it The only improvement I would like to see if they can reduce the "thickness" of the device as in Jordan (where I used them) the electric boxes are smaller and it is hard t place them inside (I had to add depth or install the device by the curtain motor (in the over windows boxes), but this should not be an issue in USA/Canada and Europe

Excelente producto

It is a great improvement over the R2, which itself is great and I have a dozen or so of. Back in Nov 2020 I sent itead a feature request to use the ESP32 so that OTA upgrades could be done(check), make it a bit smaller to work in their IP66 waterproof box(check), and add the ability to access more of the GPIO pins on the ESP32 (sadly, no check mark here). Although the case has a bit of glue on the 4 tabs holding it together, it can still be hacked by opening, soldering leads to the TX/RX/GND/3V3 pins and pressing the button when powering up. I only used it for a few minutes with stock software, but after adding to eWeLink, Alexa recognized it and I switched it out of blinds mode to regular mode. and played for a minute... then I cracked it open, connected up a CH340 USB dongle, and wrote some custom firmware to it and was able to use the following: GPIO27 relay1 GPIO14 relay2 GPIO13 status_led GPIO0 button GPIO32 switch 1 GPIO33 switch 2 I would give it 5 stars if they made the other GPIO accessible via pin-pads or thru-holes: 1-wire and reset GPIO 5 SPI for RTD amplifier: GPIO 18 GPIO 19 GPIO 23 CS for RTD amplifier GPIO 12 GPIO 15 GPIO 25 GPIO 35

First SONOFF device in my smart home. All of my previous devices were SmartLife App compatible. So I needed to install a new app to manage this. This little device in addition to controlling my shutter motor also is monitoring energy usage. So I now have a way to know how much operating my shutter cost for me. I bought one, but I'm ready to buy the rest to control all of my shutters.

El dispositivo funciona excelente, solo tener en cuenta que, cuando la carga es un motor la corriente máxima es de 1A, solo es 10A para cargas resistivas.

automatizo mis persianas exelecnte respaldo

Otimo custo beneficio

One of the few dual switch in the market that can be connected to existing curtain manual switches such as Norisys and at the same time to wifi for automation with Alexa providing full Alexa functionality. The motor auto calibrates and then Alexa Voice command can have blinds Open in percentage terms eg 30%, 70% etc. After returning 2 other brand switches finally got this feature running on Sonoff! Super cool. Blinds can now be automated to open on sunrise, close partially at sunset and completely close at given time. Dismissing Alexa alarm in morning can be automated to have the blinds open 50% for gentle sunlight waking up. Works great!

Me gusto la facilidad para instalar y manejar el interruptor Funciona muy bien para manejar la Cortina Anticiclónica

It didn’t matter for my application but a warning to anyone. The Dual R3 has two different power measurement chipsets depending on the PCB version. I purchased from in Jan 2025 and received a v1.x (I think 1.6) PCB with the older chip. It is also a bit more complicated to flash with your chosen firmware because it doesn’t support diy mode. Hardware is great, 2 external switch inputs, 2 outputs, status led’s and a button, all in a neat package. UPDATE: Seller communicated well when I highlighted the version discrepancy and offered a refund as a gesture. In most cases it doesn’t matter which version you receive unless power monitoring is your prime reason for purchasing.

Don't get irritated when trying to set it up at 1st, it may fool you because it starts by asking how do you want to use it, for motoring or switching... etc. ALERT!!!! PLEASE NOTE: This device is NOT to be used with pumps or the likes that uses above 1A current used with either one of the channels, or in total for both. For resistance (lights) total is 10A. I needed this device to run alternative pumps on schedules. but i had to install relays for every pump as they draw high current.