Shelly Plus 2PM | WiFi 2-Channel Smart Relay Switch with Power Metering | Home Automation | Bluetooth Gateway | Roller Shutters | Remote Control | Alexa & Google Home | iOS Android App (2 Pack)

Just works. They are easy to pair with Home Assistant.I have many of them controlling several ceiling fan/light combos. Never had a connection issue.I like to use these better than replacing the wall switch, as wall switches tend to be too thick for my electrical box and the ones I have tried feel cheap.Make yourself a favor and use ferrules and a crimping tool to connect your house wires to the module. This makes installation a lot easier. Please note that you will need some kind of knowledge in electrical wiring. The included wiring diagram is easy to follow (at least for me, I have experience designing/wiring electrical stuff) but you have to assess your own capabilities or hire an electrician.

I use this behind a dual three-way switch. In the space of a single decorator switch I have a twin three-way switch, so I can control a light/fan combo from both ends of a room. Trying to find something to convert the switches to a smart switch was an exercise in frustration until I found this little device.It has inputs for live/neutral/switch 1/switch 2, and two outputs. It's simple enough in principle to wire it but it does leave back boxes a bit cluttered. I had to rewire my switch to put it into a deeper back box so I could fit this into the box as well.The two outputs are totally independent of each other so you can use it for a light/fan combination, to extend/retract something motor driven (perhaps something to retract an awning if high wind is predicted, and then extend it when the high wind passes), or you could use it for two totally unrelated things that happen to be in the same back box.Shelly allows a few configurations of how the relay works, relating to switch positions and relay states so you can probably find something that will work for the way you want things to operate.As a bonus this also monitors the power usage on both circuits independently of each other. It can switch two circuits of up to 10A, with a total maximum of 16A. That's enough for most things you'll find in a house but won't be enough if you want to switch space heaters or hair dryers etc. If you want to switch space heaters I believe their regular 1PM will switch up to 16A on a single loop.Setup is simple once it's installed, the Shelly app finds them automatically and makes installing them about as easy as you could possibly expect. Then you can control them from the Shelly app, or link to Google Home (and probably others too, but I can't comment on those).Being a smart device you can turn them on/off manually, or set them to respond to other events. So you can have a porch light that comes on 15 minutes after sunset and turns off at midnight, or a setup that responds to saying "Goodnight Google" by turning off all the lights in the house, or pretty much anything you can think of.I've got three of these in my house now as well as a couple of the regular 1PM units, and expect to have many more by the time I'm finished.

Works very well

I have many Shelly devices in my house and would recommend any Shelly device. They have a simple straightforward approach with a simple installation. They also are easy to connect to other systems such as Amazon Echo or Home Assistant.

I like the fact that these can be installed behind the switches in the junction box to add smart home functionality to existing lights. I don't love that when I upgraded the firmware, I had to take it back out to reset it since it quit working.If you are installing these, do yourself 2 favors:1. Install them so that you can get to the reset switch without having to remove anything but the cover plate (rear facing forward with the reset button not covered by the switch).2. Once installed, before you put everything back in the junction box, upgrade to the latest firmware and do the reset.I also would LOVE to see Shelly put out something with dimmer functionality like this.The app works great.If you are wondering how this works, if you turn on the light with the switch itself, it comes on. If you turn it off with the switch, it goes off. If you turn it on or off with the app or home automation software, it doesn't matter which position the physical switch is in. If you turn the light (or fan) on with the switch, and turn it off with the app, it will turn off, and the switch will not work again until you turn it off and back on, but the app works anytime regardless of switch position.Also, if you turn a light (or fan) on with the app, to turn it off with the switch you just turn the switch on, then off.I love that this model shows you the wattage. I was surprised how little wattage my ceiling fan actually uses, even on high.Also, if you are like me and want to take the cover off to see what's inside, make sure you don't lose the TINY reset button, which can fall out.These use a mechanical relay, so you will hear a tiny click noise when you turn something on or off. It's not very loud, and I don't think it will really bother anyone - just a callout.

Was able to access locally and setup to my WiFi easily. Installed to turn fan and lights on in ceiling light fan combo. Added a smart switch to my wall switch and set it all up Home assistant.

Internet control is solid. Both switches works all the time as advertised. Very reliable operation. Pretty easy setup.