Gavs blue scooby

iTrader: (1)

Hi guys
I have just bought a bugeye but I don't know if it has an alarm or not....
it has the sensors on the pillars and the flashing immobiliser light and when I connected the battery back up the siren chirped but I can "arm" it and it locks the doors and the indicaters flash but I can leave the window open and wave my arms about inside the car like a loon but it doesn't go off.
should I have a separate fob for the alarm because I got a key with 2 buttons on it (lock, unlock) any help would be appreciated.

cheers