Dvr audio Question.

[SeMartz 0]

Hello, I buy a swann dvr system thinking that I can get video and audio, but I found it out that there is no audio on cameras, So I'm thinking to either return it,

If so, what system can I buy that have audio integrated cameras?

Or it be easy to add a microphone to the dvr?, it have 4 inputs and one output.

If adding a microphone it's easy and cost less.

 

I'm thinking if I can add microphones it may need 2 or 3 it's a big area to cover but

how It will work when you playback to different cameras?

 

Any help can be very appreciated.

 

Thank you.