My Keurig has a toggle switch. Will this plug work, or does the appliance have to be turned on when it is plugged into the smart plug?

I haven't even installed my smart plug yet and I can already answer this. The plug will turn it on but how would it press the button to brew? Again, I can already say it won't do that. Another answer mentioned using a switch bot. Okay. So smart plug $10-$15 plus switch bot $20 ... Dude, just go buy a coffeemaker with a clock/timer. They've been around FOREVER and will both turn themselves on and brew your coffee for you and you don't even have to make a whole pot. You can get an entire coffee maker for like $25 then use your smart plugs for something else/something that doesn't already have the ability to turn itself on/ect. :)

Does it work with a 5g wi-fi or is like the other one you sell that only work with a 2g wi-fi

This plug can likely work with your router but, you may need to go into your router settings through an app and turn on the 2.4G. Allot of 5G routers have the 2.4G option that will work right alongside the 5G but it needs to be turned on first. Some routers have both already turned on but you'll need to choose your other (2.4G) connection as your wifi router choice while setting up the switch. All this new technology can really be confusing but when it's all connected up properly, it's great.

Do I need an Alexa device in the home to control the outlet while we're away?

You can control it with the Alexa app on your smartphone; no echo device is needed. As long as the outlet device is connected and paired you should be fine

Why does my smart home plug work on some outlets and not on others? It works fine with my Echo when plugged into one outlet, but not a different one.

All of the answers that suggest being on "A and B 120 volt sections" are wrong. This device works over WiFi. That old "A and B" advice is for obsolete powerline systems like X-10. Any problems are due to WiFi signal quality. The Smart Plug and Echo do NOT need to be on the same "120 volt section."

Size	3.2” x 1.5” x 2.2” (80 mm x 38 mm x 57 mm)
Weight	3.1 oz. (87 grams) Actual size and weight may vary by manufacturing process
Electrical Ratings	Input: 120VAC, 60Hz 15A Max Output: 15A Max
Network Connectivity	2.4 GHz only, 802.11 b/g/n. Does not support 5GHz networks or connecting to ad-hoc (or peer-to-peer) Wi-Fi networks.
Use	For indoor use only.
Integrations	Amazon Smart Plug is optimized for simple setup and exclusive use with Alexa. Amazon Smart Plug does not support other voice assistants or smart hubs.
Alexa App	The Alexa app is compatible with Fire OS, Android, and iOS devices. A list of supported operating systems can be found here.
Warranty and Service	1-year limited warranty and service. Use of Amazon Smart Plug is subject to the terms found here.
Included in the Box	Amazon single-socket 3-prong Wi-Fi plug, Quick Start Guide.
Setup Technology	Amazon Wi-Fi simple setup enables customers to connect smart devices to their Wi-Fi network in a few easy steps. Wi-Fi simple setup is another way Alexa is always getting smarter. Learn more here.
Support	Click here to get help using and troubleshooting common issues with Amazon Smart Plug. To see questions and answers from other Amazon customers, click here to visit the Amazon Digital and Device Forum.

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