Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is this hard to install?
Document: Works great , but keep in mind it's not 100% wireless , you must plug in each camera,  it's easy to use and install.
Easy easy easy easy easy easy easy easy easy to install and to use. If you need help, the Lorex techs. are very helpful on line or telephone.
Well, it's been 7 months since I did the install. One camera failed about 3 weeks ago (the one furthest away from the DVR) not sure of the reason but the power supply converter that you plug in to the wall outlet might have failed.
We were looking for an exterior home surveillance system and this works great. This system was super easy to install and we were up and running in a couple hours. I also loved how you can download apps and view it from anywhere. The apps also worked super easy. We are going to order 2 more cameras for the inside of our home so we can also watch the dogs during the day while we are at work.
This is not conducive to using the Lorex to provide internet access as it would need wired internet access through the router. I even attempted to limit the impact by selecting and locking each individual channel within the wireless frequency range on my internet router to no avail. Overall, the unit was easy to install but fell short given the wireless conflicts that were created.
Incredible technology, excellent value for the price. I read several reviews about the company and the product, so I decided to try it. Amazon had the best price, and being a customer for years and knowing their customer service is excellent,  I purchased it from them. Setup takes about 20 minutes with easy to install software. The camera resolution is excellent, and the  best part is the excellent resolution at night! The manufacturer's specs are truthful here.
The length of cables supplied is disappointing at the very least, the cable from the DVR to the wireless receiiver is so short it's useless ( I haven't yet asked Lorex it they supply an extension) but if I coud install the wireless receivers the other side of my outside wall I could get maximum connectivity and a clear view of the cameras. The HDMI cable has the same shortcoming, it's too short. I bought a much longer HDMI cable which suits the needs.
This product was very easy to install even with the somewhat strange mouse only interface. The cameras work well in daylight and at night. However, the one camera that monitors an area illuminated by a sodium street light never switches into night vision and subsequently is a bit darker than the others. The greatest negative surprise was the impact the wireless camera communications had on my home wireless internet environment. The cameras, even when event driven, just killed the home wireless response.
The other two performed as expected. But also the hard drive did not record anything. On return, I banged it and it started, but despite 2 hours with technical support, I could not get it to record. The support folks said to just return the order.At any rate, the system was erratic. Sometimes it said 'failed', and I did not know if power or the internet were out.
working well thanks again
Answer: Honestly, I expected it to take a long time, but the basic camera signal to DVR, to monitor worked right out of the box. The cameras are already synced,so as soon as all the pieces were plugged in I saw the live camera feed instantly. I had two issues that were not necessarily related to the system. I had a cheap LCD TV that couldn't accpet the resolution of the syustem so I had to use an older monitor and I connected the ethernet cables to the wrong input on my modem so the connection to the app and the PC took me longer than it would have if I was able to read. Once my cable was connected properly the set-up to the cloud was pretty quick. I don't understand why the DVR isn't set up with Wi-Fi built-in instead of requiring a direct link to a modem unlike most technology these days, but I guess this keeps the cost down. The only thing someone with minimal skills might have problems with on the installation is running the ac power from the outside cameras into the house if you use them outdoors.