SONOFF S40 Lite 15A WiFi Smart Plug ETL Certified, Smart Socket Outlet Timer Switch, Compatible with Alexa & Google Home Assistant, IFTTT Supporting, No Hub Required -A Certified for Humans Device

These are great. I dont need the energy monitoring so saving money to skip that is perfect. Flashing tasmota was super easy, I used like hook leads so I didnt have to solder or anything. A UL or ETL mark is what I have been waiting for with sonoff.

Worst buy ever... I thought I was getting a great deal with the 4 pack... Wrong had to return them as they would not pair. Im in IT so I know how to pair... Junk as I see it on my part...

I purchased this device because it was capable of running custom firmware like Tasmota and ESPHome (which do not require a cloud connection). The installation process was fairly easy. The gray side piece can pop off, and then two edge pieces slide out. After that just remove a few screws and it opens. I was a little disappointed that the serial connection points were not holes like some of the other Sonoff products I have used. However, I managed to apply the firmware without soldering by taping together a row of jumper wires and pressing them firmly against the contact points while the initial flash process ran. After that, I simply put it back together and its working perfectly with the custom firmware.

Very easy installation using the ewelink app, and easy linking to Alexa.

Smooth as glass, to set up and works flawlessly.

First it took a very long time to sync, then when I moved the device to a different outlet (closer to the router) to failed to sync. Sending back and getting from a different company

August 2021, the pin pads are easily accessible, no trouble flashing Tasmota to it. Disassembly was easy and non-destructive. Great build quality and extremely responsive. I’m running 6 of these, never had a problem.

Excelent product ,i have one fan working with Alexa !!

First smart device that Ive ever bought that I couldnt get to connect to my network.

The Sonoff product line still works with Tasmota, the programming pins are available and they have not changed microcontrollers like so many of the Tuya based products have. If you only need switching and dont need power monitoring the S31 Lite switches work just fine.