You do not know how to use the Factory CCTV, the Factory CCTV is now so good, but the Factory CCTV is really popular, many areas which are installed in the Factory CCTV, hear me say is to buy this product, a friend gave me a sample say, I think he said yes, I did not expect to buy the Factory CCTV, I heard that the Factory CCTV use is very good, but his definition is particularly high, I want to be I give us some of the equipment installed inside the cell, then we have security the security ah, so I just listened to the advice of friends, to buy the Factory CCTV.