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)

Great smart switch from an excellent company. These are rated at 15 amps and they monitor power usage also. Fully compatible with Alexa. And have an excellent control application. If youre into Home Assistant you can easily flash these with Tasmota and goto the next level. Highly rated A+

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 have found the Sonoff plugs to have a better range and reliability of other plugs I have purchased. The company allows for easy hacking via circuit board pads and the use of the ESP8285 chip. Even without flashing your own code the setup is fast and it connects with Alexa without problems using the eWeLink app.

I got this because I was looking for a smart plug that would alert me to the current dropping below a certain level, which this claimed it could. However this requires integration with IFTTT, which has an additional in app cost. Even after purchasing that, it would not integrate and I could not set up my alerts. Fortinatly I was able to get my money back from google, and return this plug. as far as a basic smart plug with Alexa goes it worked just fine before I returned the item.

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.

I bought a single S31 to figure which of my appliances was the most power-draining. What I did is simply use the single S31 power plug to monitor each suspect appliance for 2-3 days. The Android App has a kWh power consumption meter which you can start and stop. I was able to find out that my refrigerator was actually the culprit, using about 2kWh a day. I would have given the S31 a 5-star but for the fact that the software app is not the most intuitive to use. But it does the job and the S31 plug itself is only $15.

I installed this product on an in-the-water boat to monitor and control a 1500W heater, using the Smart Life app. The initial configuration was a bit difficult, but it worked through the manual pairing procedure. A seemingly unlimited number of on/off cycles can be programmed by the day of week and hour, or control manually via the app. It relays wattage in use and current voltage at the plug (whether on or off). It will report total kW-hrs used over a month and cost if you input cost/kW-hr. I have several wifid temperature modules mounted in the approximate same location on the boat as well and have some connectivity difficulties with them. There has been no connectivity issues with this plug/adapter and it has been very reliable.

most apps have an option for either 2.5ghz or 5ghz. this will only work on 2.5. this should have been in the bio. will post another update after usage of a month, most notably if it crashes after brown outs.

Pretty good, but kinda bulgy. Still good

The Android application itself it quite underdeveloped. It has basic features like a timer, usage graphing, and naming conventions, but lacks any sort of optimization.