First of all motions sensors are really not
what they sound to be. The are callled
PIR's Passive Infrared Detectors, meaning
they response to heat change. So think of
where you have put the motion sensors.
Never point them towards a window, air
vent, or anything where a sudden heat
change my occure. Second, Kishore you
should remount your motion sensor in the
den, Also you can arm the system with the
remote after you close your door. As for
the guy in New York, most systems do not
arm the motion sensor when you arm the
system in home mode, the reason is what if
your wife or child gets up in the middle of
the night to go get a drink, and all of the
sudden the alarm goes off, or if you wanted
to stay indoors and watch a movie and still
armed it in the home mode, are you just
going to sit there stiff? Systems are
designed that way for a reason. Higher end
systems can arm certain zones, maybe you
should look at other systems. Either way,
just check where you mounted the motion
sensors and take my tip above, these
motions sensor have a detection range of 90
degrees left to right.