PM Mini Gen3 | WiFi Smart Power Meter 1 Channel 16 A | Home Automation | Bluetooth Gateway | Compatible with Alexa & Google Home | iOS Android App | No Hub Required | Smart Schedules

It is working very well. I am using it with Home Assistant but also works with the app on the phone. The first one went into the chicken house so I can see if the heat lamps were working. Sometimes they burn out. The second one watches the power for the garage fridge and the garage freezer. Through Home Assistant, I will get a notification if one unit does not pull power for 12 hours.

This power-monitoring-only version only saves you 30¢ versus the Shelly that does power monitoring AND switching, so the number of use-cases for this device is pretty small. The reports and information in the app is the same for both versions. That said, it does work very well. You MUST be aware of the type of outlet box you have in your wall as some homes use metal boxes for their outlets, which will greatly reduce (or block) the WiFi signal this needs to work. There's not much to look at with this, as it's meant to be small enough to install inside the wall. The most important aspect are the reports and status screens available in the app OR in your HomeAssistant dashboard. As you can see from my screenshots, you can view the current voltage and amperage in use and you can also view comparison graphs (by day, week, month or even year! This one is wired-in to the outlet for my chest-freezer. You can see that in the last 30 days it has used 32.11 kWh of electricity (or about $5.78).

Great product, integrates with home assistant very easily. Easy to use on the shelly app if you like. I prefer to keep all my iot local and not use apps that send your info to wherever.

I can’t believer how tiny this is! I’m using it to measure wattage of three outdoor flood lights, so that I can tell if one light stopped working over night. It works great for this purpose. I also use another one to watch power use by my washer, and I get a message on my phone (using this with Home Assistant) to let me know when the wash has finished. I recommend this Shelly PM mini!

This is an incredibly small power meter. You get real-time readings of intensity and voltage. It is very small. Probably smaller than the coil sensor used by other power meters. It is so small that it fits inside the electrical box, behind the outlet or switch, so it becomes "invisible". My only complaint is that the resolution of the chart, both in the cell-phone app and in the web-browser version, is very low resolution. In spite of the readings being almost in real time, the chart only shows one chart point per hour at best, even with the line chart or the full screen chart. Then, if you want to chart the last 7 days, you only get one data point per day, instead of one data point per hour. Since the hourly data is already on the server, there is not much of a reason to reduce the resolution of the charts. Apparently there is a "Premium" subscription that allows you to track the data in 1-minute intervals. No mention of this before you purchase the product. I may explore that option... Premium price is 4€/month or 36€/year.

It was super easy to install, much better than the normal one. I have Homeassistant and it connects perfectly with my existing system.

So glad they came out with a power monitoring only model, making it small and easy to fit in tight places. Works seamlessly with Home Assistant. Only con not Zigbee.

This device is just what I was looking for to track consumption of a toaster oven on a dedicated circuit. It's always plugged in so I don't need the switching capability. This thing is so tiny! It easily fit behind a GFCI outlet in a standard single gang box. Paired up with the app as soon as I turned on power and Home Assistant immediately recognized it once it was connected to Wifi. I've only had it a day, but so far I'm really impressed and totally happy.