right, after a fair amount of research I am now completely confused. the wife wants to get an alarm for the house, the requirements are below. 
  
- has to be wireless 
- keypad cannot go by the front door as no power socket and will be hidden away, near router and electrics ( will need a remote key fob to unset on entry) 
- requires min 2 door contacts, 1 - 2 pir 
- external bell 
- she wants to part arm system ( so that she can come down in the night and not set off alarm, but door contacts stay alarmed) 
  
now the bad part, she only wants to spend around the £200 ish mark, I know this wont get the best in the world but could go a little higher. 
  
from what I can see we are in the yale budget.... any suggestions ??