Top positive review
Bought one and like it so much I kept buying more.
September 26, 2016
This light switch and the other outlet style plug has worked reliably for over 3 years. There would be occasional hiccups like power interruptions that cause the switches to restart, but they have never failed on me. However, you are at the mercy of your internet connection and if you happen to be away while the network crashes, you won't be able to communicate with the switches. The daily programs will continue to work regardless.
Setting this up properly does require some networking knowledge and how to properly implement security. The switches both work on hidden and broadcasted SSID Wifi networks. Half of my switches work on the hidden SSID and the other half are connected to the broadcasted SSID. They do support security password keys, but if you want an extra layer of protection, turn on your router/basestation's MAC address control to enable only recognized and authorized devices access to your wireless network.
I have assigned static IP address to these switches by way of their MAC addresses, to avoid IP conflict when power cycling happens to my router. This is the general rule for all of my stay-at-home devices.
My eleventh switch will be arriving tomorrow. The first switch I bought in 2013 is still working to this day. All switches are still working reliably.
Works perfectly with NEST thermostat, Amazon Echo and IFTTT.
Update Dec 2017
1. The WEMO App first lets you name each switch and then allows you to set up "Rules" for unattended on/off times to a switch or a group of switches. So that a switch or a group of switches will turn on/off at a scheduled time.
2. The Amazon Alexa App allows you to first create intelligent named "Groups" of switches, such as "Exterior Lights", "Interior Lights", "Living Room Lights", so you can use voice control to address them in a meaningful way. "Alexa, turn off Living Room Lights" or "Alexa, turn off All Lights."
3. IFTTT will integrate all the functionality of your smart devices with WEMO and ALEXA (NEST and others too). i.e. The GPS in a smart phone can be used to create an invisible fence that can turn WEMO switches on/off as you pass in/out of its perimeter. My living room lights and exterior lights come on when I'm about half a mile from home. NEST can also sense I'm coming home and start cooling/heating the house. The are thousands of "recipes" ready to use.
With these three Apps together, there are thousands of possibilities to automate your home if you are willing to experiment. These are just some of the ways I use mine.
Update March 2018
1. Recently purchased the Wemo Mini Smart Plug to make the uplights in the kitchen cabinets smart. Set up was easy but I first had to add the switch's MAC address to my basestation before connecting to one of my home's SSIDs.
2. That makes twelve switches and all are active and functioning as you can see.
3. The Wemo App is very laggy, but luckily with voice activation, I rarely launch the app except to take screenshots. I use Alexa's voice recognition instead. The Mac version of the app needs to support higher resolution displays like the Android one does.