http://www.cctvfirst.co.uk/audio-option-for-most-of-our-cctv-systems-c41903.xml Audio option for most of our CCTV systems Most of our CCTV Systems have an Audio option on request. http://www.cctvfirst.co.uk/audio-kit-p401224.html http://www.cctvfirst.co.uk/audio-kit-p401224.html <b>Product Name: Audio Kit<b><br><b>Product Short Description: Complete audio kit. Compatible with most CCTV equipment<b><br><b>Model: AUD 100<b><br><b>Web Price: GBP 19.00<b><br>