All 4 cameras went bad. DVR went bad. Hell the only good thing was the cables. They replaced 3 of the cameras and stole the 4th. Don't trust customer service, they are not able or willing to do their job. Case in point sent back DVR WITH bad camera, only got DVR back.
Take a photo of everything you send them. Oh and if you buy their junk you will be sending it back you can bet the farm on it. Also when they send you an email with the rma number they accidentally on purpose don't put on there what you are sending back.