SONOFF S31 WiFi Smart Plug with Energy Monitoring, 15A Smart Outlet Timer Switch ETL Certified, Compatible with Alexa & Google Home, IFTTT Supporting, 2.4 Ghz Wi-Fi Only
$38.99
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Product Description SONOFF S31 WiFi Smart Plug – Enjoy your smart home life. App Download : Search on App store, eWeLink, or Scan the Qr code on the User Manual and install it. Easy to Set Up – Works with App Step 1: Download eWeLink App; Step 2: Plug the Smart Wi-Fi Plug into any outlet; Step 3: Configure Smart Wi-Fi Plug preferences on eWeLink App. Power Consumption Monitoring Keep track of real-time power, current and voltage of your appliances and reports on eWeLink APP. Overload Protection Set threshold value including power, current and voltage to ensure devices work securely. Certified Safe ETL/FCC/RoHS certificated – Secure and guaranteed SONOFF S31 WiFi Smart Plug works with your existing home Wi-Fi (2.4 GHz band) Technical Specifications Model Number: S31 WiFi Requirement: 2.4Ghz Only Rated Voltage: 120V Rated Current: 15A Max Ac Frequency: 2.4 Ghz Max power: 1800W Note: The maximum power changed as the local voltage.
Simple Setup and Use: plug in, open eWeLink APP, click the “+” in the upper right corner to pairing, and get started in minutes.
Voice Control – Works with Amazon Alexa and Google Home to start a voice-controlled home.
APP Remote Control: Manage electronic devices from anywhere.
Set Schedule or Timer: Create schedules to turn plugs on and off at specific times.User will control their decoration lights via timer functions.
Power Consumption Monitoring: Keep track of real-time power, current and voltage of your appliances and reports on APP; Store 100 days of electricity usage data and total electricity cost.
Secure and Guaranteed: ETL/FCC/RoHS certificated.
11 reviews for SONOFF S31 WiFi Smart Plug with Energy Monitoring, 15A Smart Outlet Timer Switch ETL Certified, Compatible with Alexa & Google Home, IFTTT Supporting, 2.4 Ghz Wi-Fi Only
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$38.99
Dr. Nick –
Good for flashing to ESPHome
This is a great power monitoring smart plug if you are willing to flash ESPHome to “uncloud” it. This turns it into a locally controlled device that does not “call home” or require proprietary apps to function. Easy to take apart and reassemble after modding. Fixes many of the pain points described by other reviewers (poor WiFi, app pairing issues). Otherwise for the sake of privacy you are better off with a Zigbee model like the S31 Lite.
Cohoman –
Flashable with custom firmware
Instead of using the eWeLink app to control this outlet (which sends your commands off to a server in China) I was able to flash it with a custom firmware for local network control. I successfully flashed both ESPurna and Tasmota which allows control via http commands sent using a web browser on my local home network. I then used a custom driver to also monitor and control this device from my Hubitat Smart Home Hub. Works pretty well and is cheap too! I did have some issues with the WiFi signal disconnecting frequently with my home WiFi Router, but I was able to fix that by making some settings adjustments with my 2.4 GHz WiFi router.
Scott Greenwald –
Works exactly as expected
This took me a total of 2 minutes in order to set up the device, connect a freezer to it and then see the power consumption of the freezer. I was then is able to easily connect it to home assistant through the sonoff integration. And then created automations to make sure that the device was always on and that the power consumption was over a certain amount over a given period of time to verify that the freezer was always working. This is super easy and a convenient way for me to verify that the contents within the freezer will stay good even if I am not at home. Highly recommend this device.
Engineer – Midwest, US –
Will not pair with WiFi / Meaningless Error Messages
Device comes with a very small multi-fold paper instruction which doesn’t provide complete instructions for use.It does redirect you (via QR code) to a mobile App which also seems to be incomplete. The App refers you to the paper instructions (calling it a manual). The paper instructions refer you to the App and primarly provides directions on how to set the device in one of two pairing modes (Quickpair or Compatible).Quick Pairing promises to magically pair with the device if you enter your home 2.4GHz wireless network ID and password. Failure of QuickPair suggests Compatible mode. Compatible pairing mode instructions (paper) tell you to connect to the device’s WIFI network, but the App immeditately prompts you to connect to a different network to proceed. Doing so fails the pairing.Even if the plug is sitting on top of the wireless router, it complains the Wireless network is too weak (even if the phone you a pairing with has a stong signal indicator).Each attempt to pair / cycle runs 3 minutes. I am a computer engineer and have been in I/T for decades. I have many other wireless outlets in my home that function well on their own custom applications and Alexa integrations.This device seems to be faulty (beyond presenting blinking blue lights). The blinking blue lights are pleasant enough, but do not meet the advertised description.
Brad Swink –
Works good, but pairing was tricky.
Pairing this plug with the eWeLink app and getting it on the wifi proved to be more difficult than I expected. Initially pairing kept failing and I was trying to follow the instructions provided with the box. I was able to find the wifi network that it was broadcasting but then I couldn’t get it to accept that network to finish pairing within the app. After googling I stumbled upon a help page for the eWeLink app and figured out the issue. I use Unifi equipment for my home networking. I have the APs setup to push all capable clients to 5GHz bands.Now I will say that I have a Kasa smart plug and was able to pair with it much easier. I think maybe the Kasa app uses bluetooth to discover the device and connect initially to push the wifi information over to it but it was very simple.The sonoff plug only operates on 2.4Ghz bands, which is common with smart home devices. What I had to end up doing is to temporarily turn off 5GHz radio on my wifi network so that my phone could pair with the device on 2.4. Once the device was paired I was able to reactivate the 5Ghz radio. The sonoff stayed connected at 2.4Ghz and capable devices reconnected to 5Ghz.If you can get past the pairing issues though there are three things this plug has going for it:1. Its very cheap2. It works with Home Assistant and Google Home.3. It can monitor energy usage which is great for automations within home assistantOverall I would say it’s a great deal at this price point. If I need to buy anymore now that I know about the 2.4Ghz issue setting it up should be a breeze. Hopefully my review might save someone a hassle.
Tim –
Installed customer firmware, most feature rich outlet for the price
I installed custom firmware in each of these. Love these specific models because they offer great value for the price – you can monitor power usage and control outlets. They’re seemingly durable and offer great features.
Wizz A. Paul –
Ya tengo varios contactos inteligentes trabajando, de la marca TPlink en sus modelos Tapo y Kasa, me gustan de ellos que son muy faciles de configurar y que tras un corte de energía regresan inmediatamente y con el último estado en que se encontraban, además de que se programan fácilmente para horarios fijos, cuenta regresiva y con temporizador. Además traen la función de atardecer y amanecer. Todo esto no lo trae el Sonoff, solo lo compré porque me interesa monitorear el consumo de algunos aparatos mientras estoy fuera de casa o en un lugar diferente a donde se encuentra el aparato. Por lo demás es un buen dispositivo, muy funcional.
Raul –
Se compró para hacer inteligente el árbol de navidad, dos series de luces LED de bajo consumo (según la app nunca pasó de 40 Watts). Se configura a través de eWeLink (la app que usa el ecosistema Sonoff) y luego de ahí se comparte con Alexa para poder controlarla con voz. Una maravilla, casi no ocupa espacio y se siente bastante confiable (a diferencia de otras alternativas en el mercado). Este modelo además trae el plus de medir el consumo, entonces mejor no podría ser.
javier gutierrez –
El equipo esta perfecto, funciona de maravilla y lo unico que no me gusta es que cuando lo apagas se queda el foquito azul prendido y eso en la noche alcanza a irradiar una luz que se alcanza a ver en tofa la recamara.
Eechegar –
Para mí este es el mejor Smart switch que puedes encontrar, mucho mejor que KASA ya que aparte de controlar el encendido y apagado tus aparatos también mide el consumo eléctrico, puedes conectar equipos hasta con 15 amperes de carga, es decir equipos que consumen más de 1800 watts sin problema.Su configuración puede ser un poco confusa pero si lees bien las instrucciones no tendrás problema, no te saltes ningún paso y fíjate bien en el estado de las luces.
Roberto Baltazar –
Excelente, estuve buscando un apagador inteligente con sensor de consumo y este es simplemente genial, no tiene tantas opciones de automatización, sin embargo, funciona correctamente y ya solo es hacer uso de algún hub de IoT (Alexa, Google Home, Smart Life, Home Assistant, etc.) para complementar. Recomendado ampliamente.