SONOFFS31 WiFi Smart Plug with Energy Monitoring, 15A Smart Outlet Socket ETL Certified, Work with Alexa & Google Home, IFTTT Supporting, 2.4 Ghz WiFi Only (4-Pack)

Why did you pick this product vs others?:I love these. Easy to flash with Tasmota and then they easily integrate into Home Assistant. Much better design than previous version as 2 will fit into a standard US receptacle. Power consumption build in.

EDIT: I have contacted the manufacturer about the two broken plugs and they sent me replacement plugs promptly. Great customer service.Original review:These smart plugs work great with the Home Assistant using the Tasmota integration and firmware and provide both smart control and power monitoring. However, the package of four outlets had two with broken coil transformers for powering the microprocessor (the plug's brain). So two plugs worked perfectly while two were useless.I have found out that two plugs are broken only after I have configured the two working ones by bad luck. Thus I have contacted the manufacturer directly to get a replacement for only the two broken plugs. I will update this review to report Sonoff's response.

Pros:FlashableAffordableEasy to useCompatible with Amazon Alexa, Google Assistant, and IFTTTPower monitoring featureCons:Too big it cover 2 gauge outletsNot as fast as some other smart plugsDoes not support 5GHz Wi-FiTo flash a Sonoff S31 with Tasmota, you will need the following:A Sonoff S31 smart plugA USB to TTL adapterA micro USB cableA computer with a terminal emulatorOnce you have gathered your materials, follow these steps:Disconnect the Sonoff S31 from power.Open the Sonoff S31 and expose the PCB.Locate the GPIO0 button and the TX and RX pins.Connect the TX pin of the USB to TTL adapter to the RX pin of the Sonoff S31.Connect the RX pin of the USB to TTL adapter to the TX pin of the Sonoff S31.Connect the ground pin of the USB to TTL adapter to the ground pin of the Sonoff S31.Connect the 3.3V pin of the USB to TTL adapter to the 3.3V pin of the Sonoff S31.Connect the USB to TTL adapter to your computer.Open a terminal emulator and set the baud rate to 115200.Enter the following command to enter bootloader mode:Press the GPIO0 button and hold it down.While holding down the GPIO0 button, plug the Sonoff S31 into a power outlet.Release the GPIO0 button after a few seconds.The Sonoff S31 should now be in bootloader mode.Use the terminal emulator to upload the Tasmota firmware to the Sonoff S31.Once the Tasmota firmware has been uploaded, the Sonoff S31 will reboot.The Sonoff S31 will now be running Tasmota.

I don't know how many of these I've bought to date, but it's a lot. I flash them with Tasmota and run them in Home Assistant. I don't know how they work out of the box, because that's just not how I use them. I find the power monitoring is great.

I first bought SwitchBot smart plugs thinking they would work with the Core SwitchBot integration with Home-Assistant, extremely disappointed in not only the broken integration, but also the terms of service from a company that has had a lot of recent YouTube praise. Unfortunately, it just shows the known ignorance and total abandonment of values in the name of convenience... Enter HACS and Sonoff; While Sonoff is also doing some data mining it is possible to run the S31 Smart Plugs completely local without the app or the cloud using HACS on Home-Assistant with no fooling with jumpers or fussing with flashing. Several recent HA forum posts and YouTube videos cover the procedure, just look for the most current so you can follow along more easily since the recent changes.Also, Stay away from the S40 if you use Home-Assistant. S31 is the way to go.Deducted a star for the shady terms of service that are getting all too common with IoT products. Otherwise, it would be 5 stars.

I bought these Smart Plugs to reflash with ESPHome and integrate into Home Assistant, and they worked perfectly! The flashing process is a breeze—there are labeled pads that you can clip onto to program, so no soldering is necessary. Once set up, they function flawlessly and provide reliable energy monitoring. Highly recommended for anyone looking to customize their smart plugs for home automation!

I think I have about 18 of these. I've installed Tasmota on them, which is extremely easy to do (tip: speed it up even more and avoid soldering by getting some of those spring clips). I've gotten to the point where I have Tasmota installed on each one in about 5 minutes start to finish. I use them for several appliances solely to monitor power usage (things I'd never shut off, like the fridge), and with Tasmota you can disable the ability to shut them off.I had one that didn't work - the relay never triggers power to flow. Unfortunately I didn't open the package and discover the issue until after the return period had expired. So, that one is on me. But otherwise they work great.

I have about 15 of these now, all flashed with Tasmota and controlled with Home Assistant. These are the perfect cheap smart plug. Protip - wish I would have tried this 12 units ago, but you do not have to solder wires to the pads to flash these, you can carefully place some small alligator clips on the pads. To flash, I'd highly recommend this USB to TTL adapter: amzn.to/462UO70