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: Does it require batteries or outlet plug in?
Document: Did what was intended connected other HDMI devises to a older tv with just one HDMI outlet and connected to the tv
Did everything promised, simple install and has worked perfectly not much else to add, silly to require more words friends
I've had a wonderful product, I advise buying and dealing with the sellerAnd I have told me this product much as I owned a TV outlet only one HD I When using this product solved my problem
Good Price, Fast deliery and the added bonus is that it automatlcally detects what device is being used. Way cool for such a small item.does not require any additional power source. Awesome Product.
It makes it much easier to switch between devices for the TV. The bright blue light does not bother me as it is behind the TV. I like that it does not require a remote as I don't want one more remote to lose.
Absolutely abysmal product. Caused the television screen to constantly short out  the images of any video game console attached to it, and sometimes this would require the TV to be turned off and turned on again in order to restore the image. Totally substandard and unacceptable.
Purchased, received and sent back! This product did not work; it would not switch, automatically or manually. Three outlets supplied with only one outlet working. Poor quality with a small thin leader cable with a sloppy HDMI connector. Did not work as described - I would not recommend. Look for the &#34;Aurum&#34; HDMI switch which I purchased and works  as intended and is automatic.
It's lightweight, it doesn't require an external power source, and it's able to autodetect which port is active at any given time. Obviously, if you have more than one thing plugged into it AND more than one thing powered on at the same time, then you will need to manually select which channel to use by pressing the button on the top of the device (it doesn't come with a remote). For the price, I'm totally impressed with it.
I got a Roku for Mothers' Day. When I went to hook it up I discovered that my TV only had two HDMI outlets and both were in use. I ordered this splitter so I would have a spare outlet if I purchase a new HDMI product. It turned out to be very easy to install. I didn't even have to call my SIL for help. Granted I have only had it and been using it for a little over 24 hours but so far it has solved my problem and is working just fine.
This hdmi splitter was what I was looking for. My HDTV surround sound system had four HDMI inputs but I had six devices that I needed a HDMI input for. I was sick of constantly disconnecting one outlet and plugging in the other one untill I discovered this item! It's basically a HDMI splitter that will allow your one HDMI input to become a two HDMI support. All you have to do is slide the switch and then there's video,it's that simple. The item is made very well, doesn't feel cheesy at all.
Answer: No, uses the power from the HDMI cables.