Sannce audio setup

[Celldweller 0]

Hi,

 

I have bought a SANNCE 8 Channel CCTV HDMI H.264 DVR 4 Outdoor 800tvl Night Vision Camera Home Surveillance Security Video System, QR Code Scan, Internet & Realtime Recorder (No HDD Pre-installed) CCTV setup - http://tinyurl.com/lqv8h7c

 

On the audio description it mentions that the system has - Audio Input/Output: RCA 4/RCA 1 - However, I am having some difficulties setting this up. I have purchased a 20m

 

However, my main problem is the audio feed. I have purchased a Komodo 20m RCA AV CCTV Extension Cable / Extends Audio Video and Power / For Security Camera and a cheap an cheerful mic with a power feed and a white connector http://tinyurl.com/mp933az

 

Can anyone advise where I am going wrong with this or if I even have the right equipment?

 

Thanks in advance