Mine is just a Semi-D.
Looking at the glass windows from the inside of the house, you can see a small piece of rectangular white cube on the window frames(just around a few cm long), I was told that those are vibration sensor for the fixed glass windows to detect the breaking of glass windows.
For glass windows which can be opened, they fixed contact sensors in the inside of the window frames so you can only see the small white piece(round shaped with just about 1cm in diameter) when you open the windows.
For glass sliding doors, they fixed another kind of sensors which is button like, if someone opens the sliding door at night after you trigger the alarm system, the button-like sensor will activate the alarm.
There is also a motion sensor pointing at the stairway leading to 2nd floor. Other than all these, there are 2 panic buttons, one on each level.
Alarms will alert the Gurkhas and they are linked to the Police station outside at Anjung and also the additional Auxiliary Police which UEM employed for Nusajaya and they are also stationed at Anjung.