Hi Home Depot Customer, that's a great question. Yes, you can use a 200' extension cord to provide a power source for the cameras.
Yes, the DVR has settings to notify you on motion via email, but it is camera based and you will need to program this per camera. In addition, you can program mobile notifications by using the free QT View mobile app (available for iOS and Android).
I'm wondering if this is a typo. It's a direct contradiction to the package description. I can tell you that this is the second Q-See system I've owned, and I love it! The camera resolution is great! I'd suggest that you go to the Q-See website. They have a live chat support system, and they may be able to clarify the actual camera resolution for you!
Hi Home Depot Customer Yes you can add the cameras listed to the DVR.
Yes, the cameras do require a plug in.
If you go to https://q-see.com/, you can find a list of cameras that are compatible with this particular DVR (QTH85)