Q-see 408 surveillance system bought this for $550 bucks 8 cams infared vision I can connect to my cams via my iPhone and my computer. I got audio aswell I recommend the system to anyone on a budget great customer service that you can understand they can even remote access your stuff from your computer to help get you Rolling. I have a radio shack omni directional mic with an extension cord and a mic mixer I can hear the neighbors with it in their house. The mic is under the trailer that is stuck in vent works amazing! If you need surveillance get the system!