E34 FF alarm sensitivity ?

["GARRY GRIGG" <garry_grigg@xxxxxxx>]

     I have finally acquired a 520i Touring (with intergalactic mileage !)
     What an ace motor .... more to follow I am sure.
     
     The Dealer fitted alarm is the type with the infrared key.
     
     I seems VERY sensitive to being tripped.  So bad that the previous 
     owner did not it and after last night neither am I !
     
     Can it be de sensitised a bit ?
     
     Does it have U.sonic detection (I cant see sender or receiver) just a 
     little red light in the front air vent ?
     
     If it has, can they be turned off to leave window open a bit ?
     
     Is the control under the back seat as the radio controlled equiv.. ?
     
     If the alarm is set and the remote batteries go west can I move the 
     car ?
     
     The "key" has the fold out blade for the ignition and the buttons to 
     operate the alarm but there appears to be another metal section slid 
     into the end that I can not release.   Any ideas ?
     
     More question to follow when I get rid of the 318i Touring and put the 
     520iT on the road.
     
     Garry
     Wilmslow
     UK
     wigg@domain.elided

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