Connect my existing burglar alarm system

[rnollen]

Hi,

I have an existing alarm system in my house and I want to find out if I can connect my domoticz to it using MySensors?
I have a Texecom R8 burglar system and using the leds keypad. An example picture of my keypad:
https://www.grax.co.uk/Upload/SiteImages/XL/b945b594-4bee-4a42-8c04-dc5baa2f49af.jpg

and an example picture of the Texecom R8 alarm system:
http://www.traderswarehouse.co.uk/index.php/texecom-veritas-r8-plus-control-panel-1

Now, I want to find out if there is a way to connect this to my domoticz using MySensors

I looked a little bit around on the internet and I found this:
http://hackaday.com/2012/07/27/bending-a-home-security-control-panel-to-your-will/

So my questions:

1. Can I use the same procedure on my alarm system?
2. How must I edit the sketch for my alarm system, because my leds and buttons are different?
3. How must I connect the radio to it and what must I edit in the sketch in order to get it working?

Or is it better to just use a relay switch somewhere?

Hope someone can push me in the right direction? Thanks!!