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)

Bn Link used to sell these with a power meter but I contacted them and they don’t offer the meter option anymore because of a chip shortage. These are a couple bucks more but the power meter is the feature I really like.

My intended goal for purchasing a dozen of these ugs was to integrate them with Home Assistant. I was able to successfully integrate them without too much fuss. The plugs work as designed and advertised. Additionally, I am able to either use the eWeLink app to see the each plugs overall power usage and control each plug. I plan on flashing these with ESPHome firmware so I reduce the need to rely on the Sonoff cloud. These plugs do have a LAN Mode option which enables them to reduce the need for the cloud, which I really liked. Overall, plugs are a 9/10 on my rating.

Adding new devices can be daunting at first, but once you get the hang of it, it becomes a breeze. The ability to monitor appliance energy consumption is a definite plus, and being able to schedule the ON/OFF times is only second to being able to remotely power on, or turn off anything plugged into the unit.

After four months two of the four units stopped working. They still function you can turn them on and off with the button however they will not connect to Alexa app, which makes them useless to me. (Edit) All 4 have stopped working now. Have replaced with Govee outlets that function just fine. This is a horrible product !! Stay away.

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.

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.

Tried for days to pair and almost returned them. Most only searches so older versions of the app and the app is not intuitive at all. It is very picky with how your wifi is set up. The Name(ssid) and passwords Can Not have any spaces or special characters. This was a challenge because we are not able to change these without have to re setup all our other devices. Some are security cameras that are very difficult to get to (26 high and 1/4 mile from our router). Our router is only 2.4ghz but the app kept acting as though we were trying to connect to a 5ghz router. Ultimately we had to add a Guest Account named Letters only and set the password with the same restrictions (which makes for a very weak password). Once paired...whew, It seems to be working. The app does Not give the level of detail I was hoping for. It only provides total daily power usage or instantaneous usage. I wanted to see what time the refrigerator defrost heater came on, for how long and how much power it used but the app doesnt do this. With all this considered it is a good value and we may even buy more now that we are able to pair them. One star deducted due to the app, not the switch itself. Although, if the devices continues to work well over time without loosing connectivity or failing we will update to full 5 stars. We were able to determine the fridge pulls about 1amp/120watts while the compressor is running and a total usage of about 0.9kw over 24hrs. The hair drying on high heat and fan pulls over 13amps/1600watts which is almost the max rating of the device. Be careful not to overload. Only ran for a moment so cant speak to how long it can handle this level of current draw. Lastly the basic math calculation is not 100% accurate which should be very easy to accomplish. Volts x Amps = Watts. The device measures the amps and the volts and calculates the watts. They were reasonably close but not perfect. See image attached, should be 126 watts.

These are great products to control devices and monitor power consumption remotely. I flash them with the Tasmota software package and then monitor/control them with Node Red. They appear to be certified to the equivalent of UL, though it would be great if they went with UL directly for the US market.

These were not so easily added to the Alexa controlled system. Instructions did not track with the way I had to install them. The plug is large and the light/button, instead of being on the front, is on the side which means horizontal outlets, depending on orientation, may make it impossible to see the status light.

Estos enchufes solo funcionan a máximo 2 metros del router. Más allá no tomarán señal de wifi. Tengo unos más baratos y toman señal hasta 50 metros, una decepción los eschufes sonoff, literalmente solo funcionan al lado del router.