SONOFF S31 Smart Plug with Energy Monitoring, WiFi Outlet 15A Remote Control, That Work Alexa, Google Home & IFTTT, ETL Certified, NO Hub Required, 2.4GHz Network Only(2-Pack)
€20
Price: $19.99
(as of Sep 28, 2025 12:59:32 UTC – Details)
From the brand
SONOFF has been deeply involved in the smart home field, and our philosophy is to bring a more intelligent lifestyle to consumers around the world.
Our products are developed according to the needs of consumers. No matter where you are, you can enjoy the powerful control and convenient functions of SONOFF’s wide range of smart home products.
SONOFF Smart Home
Product Dimensions : 3 x 1.57 x 1.3 inches; 6.4 ounces
Item model number : TPB-US
Date First Available : June 30, 2023
Manufacturer : SONOFF
ASIN : B0C9SWFBR2
Best Sellers Rank: #177,838 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #425 in Electric Plugs
Customer Reviews: 4.2 4.2 out of 5 stars 55 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
APP Remote Control: SONOFF Smart Plug can help you easily control your home appliances anytime and anywhere through the eWeLink APP.
Energy Consumption Monitoring: You can see the power and power consumption of electrical appliances in real time, and you can get the electricity consumption in the past 100 days.
Voice Control: Smart Plugs taht work with Amazon Alexa and Google Home, so you can enjoy controlling your smart home devices with voice commands.
Schedule & Group Control: You can create custom schedules to automatically turn on/off your electronic devices, saving energy and money. And you can set up a group for all your smart plugs and control them with just one tap.
Easy set up and Use: Download the eWeLink APP, connect to 2.4GHz Wi-Fi, you can successfully pair the smart plug, and share it with family and friends to enjoy smart life together.
Customers say
Customers find the smart plug works well, with one mentioning it reacts instantly, and they appreciate its value for money. They like its energy consumption features, with one customer noting it provides detailed power information, and they find it easy to use, with one mentioning it integrates well with Home Assistant. The connectivity and app permissions receive mixed feedback, with one customer reporting spotty connectivity and another noting intrusive app permissions. The ease of assembly also gets mixed reviews.
8 reviews for SONOFF S31 Smart Plug with Energy Monitoring, WiFi Outlet 15A Remote Control, That Work Alexa, Google Home & IFTTT, ETL Certified, NO Hub Required, 2.4GHz Network Only(2-Pack)
Add a review
Related Products
€20
Some person –
Great for Tasmota/Esphome
These are the ones you want if you want to reflash them to tasmota or esphome.I’ve got a batch of them and they all work fine after reflashing. Will probably buy more. It’s also great as simply an energy meter to test things, IMO FAR better than a Killawatt, as it can log and it’s not something you either have to watch or remember.
Amazon Customer –
Very nice product
I have only had them for a week or so but they have worked well and give me a lot of power info at your finger tips. I like them.
Jeff H. –
Best SmartPlug (after modifications)
I have a dozen of these and use them to control dumb devices and energy monitoring. They’re great for the price.I flash them with Tasmota or ESPHome firmware and they’re flawless. It’s a little extra work, but totally worth it.Highly recommended!
Meagan Mertson –
No warning of cutting access
There’s a trial period? Don’t buy the outlet plugs. I checked on my plants and they were dying, wilted, bent stem, leaves turned yellow. I have no clue how long the light was out because there was no warning I couldn’t use the plug timer anymore. Scam. Ruined plants I’ve had kept alive for years. All the time and energy lost because of it’s stupid eWelink app. So mad.
Manuel Rubio –
Buen resultado
Funcionan perfectos, pero son muy complicados de configurar la primera vez.
Sompom –
Hacker’s delight
These are the best smart switches out there. Why?They use an ESP32-8266 processor and they have easily-accessed programming leads.Sure, you could use them directly out-of-the-box. They’re probably good for that.But if you’re really into smart home, why not get your hands dirty and re-flash them? There are plenty of guides online. Then you can run them directly over your home network. No more security problems since they’re not connecting over the Internet. No more privacy problems since you control the device. Also, they react instantaneously, compared to the 1-2 seconds my other, Internet-connected smart switches take to react.Anyway, what do you have to lose? $8? Consider it a learning experience!And SONOFF, this review is to remind you why your customers love you. As far as I’m concerned, I’d be even happier if you mailed these products with externally-exposed tx/rx pins so I didn’t even have to open the case!
FEB –
Nothing gets simpler than this
Home automation for everyone at the best price with the best app and integrations with alexa and google.
Erik in MO –
Reprogrammable for ESPHome
I got these after finding out that the S31 outlets could be flashed with ESPHome firmware and added to HomeAssistant very easily. They disassemble cleanly and once reassembled look unmodified, unlick some other brands I have done the same process to.,