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

Enclosure design is excellent for getting access to innards to flash custom firmware (Tasmota in my case). Not glued together but held together with snaps and screws. Build quality is good. Did not use stock software to control with Alexa but flashed firmware for local control (device does not “phone home” to China. WiFi reception is strong with the ESP chip (stronger than many comparable devices). So far, very pleased with design and results. All together, I’ve purchased 8 of the S31 (both Lite and EM versions) and they all work (some other brands were somewhat hit or miss). Good QC.

Es excelente y cumple a la perfección con su función. Evita que me levante de la cama.

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.

I own several Sonoff products, switches and plugs. They are flawless. Ive never had a problem. They are simple to setup and easy to use. Alexa integration works really well too.

Muy util y necesario en los tiempo que corren. 100% recomendable.

This plug is very disappointing

Cant leave a bad review because they seem like typically Sonoff quality and it was my mistake, just know they cant be flashed to Tasmota. Go for the S31 version if you want that instead

I used it to remote turn on my PA system! It works perfectly!!

Great for high amperage devices. I wanted a smart plug that could handle 15 amps to control an electric heater with Alexa. This fit the bill.