Guys Help!

Is there Anyone who knows how to set/stop(mute) the beep siren of my Venon Alarm system installed in my car when everytime I opened the door? I want to setup it without Beep siren when doors opened & only lights will flash. The setup is being done thru the use of Remote control by pressing combination of buttons.

And the PROBLEM is I don't know the combination of buttons to be press and if there timing needed in pressing the combination.....Anyone who knows the Pruceedure????? PLZZZ HELP