SONOFF S31 WiFi Smart Plug with Energy Monitoring, 15A Smart Outlet Socket ETL Certified, Work with Alexa & Google Home Assistant, IFTTT Supporting, 2.4 Ghz WiFi Only (2-Pack)

Pros: Flashable Affordable Easy to use Compatible with Amazon Alexa, Google Assistant, and IFTTT Power monitoring feature Cons: Too big it cover 2 gauge outlets Not as fast as some other smart plugs Does not support 5GHz Wi-Fi To flash a Sonoff S31 with Tasmota, you will need the following: A Sonoff S31 smart plug A USB to TTL adapter A micro USB cable A computer with a terminal emulator Once 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.

Pretty good, but kinda bulgy. Still good

These plug are a nice size and appearance. They come part well if you want to flash it. Flashing it is super easy with a decent jig. Be warned the breakout test pads lift easy if you try to solder directly to the pads. It was faster to print a jig then it was to fix it after the rx pad tore off.

Flashed Tasmota, and calibrated power use. They are working great, except I found out my deep freeze uses a lot more power than I thought it did.

Easy to disassemble and flash with tasmota, exactly what I was looking for. Works with energy monitoring in home assistant through cloud on factory firmware, or locally on tasmota.

Got this to monitor the flow of electricity and to be able to reset my rig remotely. The power draw through this is not consistent and would cause my rig to reset every several hours. The wifi function and app worked well and it did monitor power usage but it was pretty basic.

Works great right out of the box. Using the Ewelink software, you are presented with all the parameters and easily connects to Alexa. Just change the name during the configuration to prevent Alexa from getting her tung tied up in a knot. The only downside is that unlike other Sonoff boards, the serial connection points on the board does not have through hole pads. Several flashers have damaged the pads trying to hook up the connections for flashing alternative software. Very good value for money

I cracked this baby open as soon as I received it and flashed Tasmota onto it without any issues. Works great!

I love these smart plugs, it’s very affordable and it really works. You can monitor all your appliances for power consumption and integrate in home automation with any kind of platform - alexa or google to name a few.

This is my first time buying a smart device snd loving it so far. I always hated to get up and turn off my living room lamps. Now its just one voice command and it turns off. I like how sturdy it is but i hope it wont go bad after some use as when we turn on or off it makes switching sound.. overall loving it so far..