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)

I love everything about this outlet, except for the power monitoring function, I wish that you could download more than just the past 3 months of monitoring data, I also dont like that the data is cloud based. A great future addition would be to have an option to view when the appliance starts up & shuts off if possible? That way you could know the total running time.

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.

The Sonoff isnt the smallest, but I needed an outlet with local control and power monitoring. I was able to flash Tasmota onto the outlet in about 5 minutes, as the Sonoff is easily disassembled. With Tasmota firmware running on the outlet, all control is local with Home Assistant. There is no need to pair the device with a server in a far away country and there is no communication going on outside of my house. In fact, I put all of my IoT devices on a VLAN that does not have any access to the internet or my normal household network. Keep everything local with local control and keep spyware out of your home.

We live in an older home that doesnt have overhead lighting in the ceiling. In stead, every room has to be lit with lamps and it was such a pain to turn everything on an off when you entered a room. So, we decided smart plugs and they have been a game changer. Very easy to set up with the eWeLink app and then integrate with the Alexa app. We group the switches together in each room and then set up the on/off schedules and routines in the Alexa app, rather than eWeLink, but you can do it either way. Lots of options. So much easier to just say Alexa, turn on the living room than switching on three lamps! Love these.

Excelente compra, la configuración con la app eWelink se debe realizar primero via bluetooth y luego si enlazar al wifi 2.4Ghz. A través de ésta app se puede visualizar el consumo real de electricidad del aparato conectado. Enchufes muy estables, espero tengan la durabilidad adecuada

I just needed good, wireless devices that allow intelligent, accurate monitoring of electricity consumed by a device. This device was the epitome of disappointment. During the WiFi setup (2.4 GHz), it insists on getting your LOCATION INFORMATION. No thanks. AND you have to create an account to use them. NO THANKS AGAIN. No iPad specific app, only iPhone. Three strikes. Done. No more. For example… To pair, the blue LED blinks 2 dots and 1 dash. Then press the button for 5 seconds and it changes to… 2 dots and a dash… AGAIN. This is 2022, I have no need to be proficient in Morse Code. These things are not even heavy enough to be used for paperweights. I just wasted $20. You have been warned.

Funcionaba muy bien y fácil de instalar

After opening them up and flashing Tasmota firmware to the onboard chip, I can now control these via MQTT and my home control system without an internet connection needed. A VPN connection handles off-site control. I am currently using them to schedule lamps and equipment chargers periods of activity.

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.

Like many other reviewers, I have purchased this particular switch to install Tasmota on. I use them for energy monitoring, and in some cases their original intent - outlet switching, in my home. I buy whatever pack is cheapest per unit at the time, be it 1, 2 or 4 pack versions. Theyre all the same in my experience. To get them installed with Tasmota, I first tried to solder leads to them. Then I tried to solder pin headers and that was a little bit easier. Im slightly beyond entry level skill with soldering, but I destroyed at least three units in this learning process. I finally graduated to micro-grabber electrical test clips and have ripped through over two dozen conversions now without incident. Lets be frank. Id rather Sonoff just offered Tasmota OS from the get-go, or made these over-the-air flashable. I will settle for nothing less than local control and Im definitely not itching for a new and different cloud solution or app. Id prefer not to hack these devices in the first place and if Sonoff works towards preventing this from a hardware or software standpoint, I will buy no more of them. At the time of this writing (March 2022), this is probably one of the cheapest way to get local energy monitoring and basic 15 amp capable on/off outlet switching. I use Home Assistant for my home automation platform. These are fully compatible with their new energy monitoring dashboard. This provides me with significant insight into my homes energy use, especially now that theyre widely distributed to the overwhelming majority of my outlets. I usually capture between 13-18 kilowatt hours per day, the bulk of my usage. To be clear, I use higher grade energy monitoring switches in mission critical applications (furnace, fridge, etc.), but these are great even for non-mission critical high amp usage scenarios up to 15 amps. Ive pushed some of mine well up to the limits and havent had any major problems or sparks fly. Out of a couple dozen, Ive had one actual device failure. Oddly enough, even with different firmware, different units operate differently on my WiFi. Some stay connected to Wifi 100% of the time, others intermittently connect throughout the day. I dont lose any granular Home Assistant data because of this, nor are they ever inaccessible and fail to turn on/off. I dont have a good answer as to why different units behave differently with the same software. Odd behavior, but it doesnt result in problems. I really cant complain anyway, Im using them well outside of the manufacturers intended use. Build quality is good enough but I wish there was a bit more consistency. Since the majority of buyers are intending to hack these, I really wish they wouldnt cinch down some of the poor-quality screws like they are Shee-Ra or the Hulk. Ive destroyed way more screws than Ive wanted, and thats with the perfect screw removal tool which Ive determined to be a 2.0mm flathead screwdriver. Again, I just wish I could buy a decent quality, super cheap, 15 amp capable smart switch product with the OS of my choice out of the gate. Ive used these to solve VERY REAL problems in my home. From triggering outlets based on other inputs to making serious dents in energy conservation, I believe the $200ish dollars Ive put into these Sonoff S31 units will eventually pay for themselves. Its fairly easy for me when Im paying almost $0.25 per kilowatt hour, others might not have as good of an ROI. If anything, Ive achieved some level of energy usage consciousness. Ive killed and/or automated quite a few parasitic energy draws I wasnt even aware of, and have easily increased my automation abilities at the same time. Its important to know that these utilize about 2 watts each, just to function. This might not seem like much, but with two+ dozen of them running 24 hours a day - were talking about a ~50 watt constant load just to monitor outlet energy. For me, Ive killed and automated much more than that, so Im in the black as it were. Its important, at least for me, to keep tabs on the cost and value of energy monitoring. Im hoping I can continue to use these to save at least $500 in energy in the next 5 years, and so far, that seems to be a reasonable goal based on how I use them. Lastly, I dont want to get too much into minutia, but you need a fairly robust WiFi network to support the internet of things over WiFi. Personally, I utilize multiple networks, including Lutron, Z-Wave, Zigbee and WiFi to get there. Put simply, I dont use these cheap and ubiquitous hacked WiFi devices to service mission critical applications in any way. If a failure would cost me a fair bit of money, I spend more than $10 to capture energy usage and (sometimes) provide switching capabilities. +4 stars for being a hackable and very useful device overall. You can debate about that last star, even I waver between 4 and 5 stars. They provide much value for not much dollar and a reasonable +/-2 year path to return on investment for many people that are trying to optimize energy consumption or provide local, automated switching controls.