This TP-Link Smart Plug is another useful device from the TP-Link company. I've used many TP-Link products over the years, particularly routers, and have been impressed with the quality and ease of use of their products. I also have their Smart Bulbs, that work consistently well in comparison to several other competitors' smart bulbs i've tried, and this Smart Plug, like my TP-Link bulbs, is easily controlled by Alexa.This TP-Link Smart Plug is easy to set up. You download TP-Link's "Kasa" app to your smartphone, sign-up for an account, and follow the simple directions. As some reviewers have noted, the on-app instructions are much more thorough and take you by the hand, in comparison to the short instruction paperwork included in the box. You plug this Smart Plug into an outlet and pair w your home network by following the instructions shown. If you've paired other smart devices into your home, this will be old hat. If you have not, you'll find the directions on your app simple, short and understandable. The Kasa app itself is basic, but functional- you add and name each smart device, and in the case of this Smart Plug, you control the on/off power capability from your phone, to include simple scheduling (turn on every M, W and F at 7am, etc...) and timing (turn off after 1 min to 23 hours). The power button over the plug outlet, which glows green when the power is set to ON, can also be manually toggled as an on/off switch by pressing. As a wi-fi range extender, you can see total clients on your network, connection speeds, the name of the network they are on, and network details such as the uplink signal strength and speed at the 2.4Ghz or 5Ghz options. If you already have TP-Link smart devices and a Kasa account, you simply add your new Smart Plug to your existing devices.To add Alexa functionality, you need an Amazon Alexa device of course, and the Alexa app. After you've set up the TP-Link Smart Plug to work within the Kasa app, you need to ensure you press the Smart Plug icon (or whatever icon pic you choose for this smart plug), go to the Settings, and enable "Remote Control." You then goto the Alexa app and enable the Kasa app in "Skills" and link to your Kasa account (you need to have signed up for a Kasa account- you can't just be using as a Guest). You then press Alexa app's "Smart Home" area, "Devices," and at the bottom of your devices, press "Discover Devices." This should show you your newly added TP-Link Smart Plug (if you already have Kasa set up in Alexa due to other Kasa devices, this Smart Plug will show up automatically). You can then make voice command to Alexa to control your Plug. Writing this out sounds a lot more complex than it is- it's not too difficult to make this work in real life w a few caveats: it's critical to ensure that you have the most recent Kasa firmware and Alexa updates for your apps. The older Alexa app won't work w Kasa, as I found out by calling TP-Link's 24-7 available customer service line. They were helpful and quickly resolved the problem. Very good customer service.Overall, I'm pleased with this Plug, that adds smart home functionality to my "not-smart" devices, and there is no hub required. The main reason I deducted a star, is that this plug takes up a full outlet (you can't use the second plug on standard wall outlets) and it is very bulky in design, sticking fairly far out of your wall. I am also not too impressed with the wi-fi extension capability, as it does not seem to improve my speeds in an appreciable manner in the more remote areas of my home where I tried setting this up. Still, it's pretty useful for being an Alexa controlled power outlet.btw, some not-smart devices you may have, which contain auto-off features in the event of power outages or disruptions, will not work with this plug just due to their own internal fail-safes. This is not a criticism of this Smart Plug, just an observation that may irritate you when you notice that many of your devices will not just turn back on when power is restored.