Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: So this is a wifi repeater and it turns your electrical system into ethernet cable too?
Document: If you are looking for a solid, reliable product invest in the TL-WPA4220KIT as the solution for extending your WiFi network. The kit is dual components, one connected directly to your current router by an Ethernet cable and plugged into an electrical outlet, acting as a LAN transmitter through your electrical system to second component in the 4220KIT, which is plugged into a second electrical outlet. This second component receives the LAN signal through your electrical system and then broadcasts a WiFi signal, acting as an extender or a repeater.
It is now set up on your wireless network.4) Now plug one end of the ethernet cable included into your wireless router.5) Plug the other end of the ethernet cable into the Powerline Adapter and then plug that into an electrical outlet.6) Now you can move the Wifi Extender (the larger brick) to an electrical outlet in any area of your home that has poor wifi strength and you're done!
These little devices let you extend your wireless network to another location without having to run an ethernet cable between your router and an access point. Instead, your home's electrical circuits are used as the network. This helped me solve a big problem with dead spots that were created because our wifi signal couldn't pass through to the other side of a concrete wall. Unfortunately I tried it in my parents' house and I couldn't get it to work as reliably as it did in my home.
Choosing single device options from TP-Link or any other vendor is simply asking for trouble, because you are trying to take a WiFi signal and rebroadcast it, but with the 4220 Kit you have two paired components, that use your electrical system for connectivity, which eliminates one WiFi component from the equation.
Simply unplug the ethernet cable that connects your wireless router to your modem before upgrading. Once the upgrade is complete, plug the cable back into your wireless router and you're done.Because there are so many variables with regard to wireless routers, electrical wiring, house configuration, etc., I am not surprised to see that this product did not work perfectly for every reviewer. However, if you buy from Amazon, you can easily return it for a full refund if it doesn't work for you.
I have tried several WIFI range extenders. Most of them fail because, they them selves are far from the original WIFI router. They need to be placed in a location where they can reach the primary router.. which limits the distance it can cover. Normal WIFI to WIFI range extenders are good for improving edge covergaes, but not to extend beyond the reach of the primary router.With the ability to use electrical outlet as Ethernet cable, you can create your secondary WIFI any where you need to.
I am house sitting for the summer for a friend who has a cable modem with attached router in an upstairs &#34;frog&#34;. The wifi reception in downstairs areas away from the frog is spotty to nonexistent. After installing the extender, wifi is available every where. It was very simple to install and to &#34;clone&#34; the original network. No dumbing ( and slowing) down the network security to weep like with a repeater router.
NOTE: It cannot be a power strip - only a regular, built-in electrical outlet.2) Press the WPS button on your router for 2 seconds (no longer)3) Press the Wifi Clone button on the Wifi Extender for 2 seconds (no longer). It's at the bottom of the row of lights on the front of the extender - it's a little hard to see. Note: It is NOT the reset button located near the two ethernet ports on one end of the extender.
This product is very easy to set up and use, and the instructions are written clearly enough that anyone can follow them with ease. This system uses the electrical wiring in your house to create a wired network. One thing you should know is you need to plug these directly into a wall socket.
Trivially simple to install. My office is on the other side of the house from my modem. In the office when I connect with an ethernet cable to my computer I get the advertised upload and download speeds as if I'm connected to the modem. As a WiFi extender it is also excellent. I get almost the advertised speeds in my office as if I'm wireless and next to the modem.
Answer: This kit does 2 things:1. it turns your house's electric circuit into an ethernet network and 2. it provides a WiFi access point to said network, thus extending the range of your WiFiTo accomplish that you have to connect the small box to both an outlet and to your (existing) wireless router. Then you plug the large box to an outlet when you have little to no WiFi signal.It's not a repeater because it doesn't "catch" your router's wifi signal, amplify it and then repeat it wherever you place it. What it does is to provide a wifi hotspot with the same parameters (SSID or network name, security and password) as your existing wifi network and communicates with your router through your house's electrical system, providing a more reliable and strong connection. The ethernet ports on the bigger box could also be used as regular network ports.