!"$S"!
The Limitations Of This Alarm System
aD2.*%1D27%7671*8%27%-+%-4Y-+=*4%4*72<+%7*=;,216%7671*8Z%21%43*7%+31%3CC*,%<;-,-+1**4%H,31*=123+%-<-2+71%S;,<.-,6%3,%C2,*
3,%31D*,%*8*,<*+=6(%/+6%-.-,8%7671*8Z%VD*1D*,%=388*,=2-.%3,%,*724*+12-.Z%27%7;Su*=1%13%=38H,3827*%3,%C-2.;,*%13%V-,+
C3,%-%Y-,2*16%3C%,*-73+7(%@3,%*K-8H.*[
k I+1,;4*,7%8-6%<-2+%-==*77%1D,3;<D%;+H,31*=1*4%3H*+2+<7%3,%D-Y*%1D*%1*=D+2=-.%73HD2712=-123+%13%S6H-77%-+%-.-,8
7*+73,%3,%427=3++*=1%-+%-.-,8%V-,+2+<%4*Y2=*(
k I+1,;723+%4*1*=13,7%]*(<(%H-772Y*%2+C,-,*4%4*1*=13,7^Z%783Q*%4*1*=13,7Z%-+4%8-+6%31D*,%7*+72+<%4*Y2=*7%V2..%+31%V3,Q
V21D3;1%H3V*,(%:-11*,6%3H*,-1*4%4*Y2=*7%V2..%+31%V3,Q%V21D3;1%S-11*,2*7Z%V21D%4*-4%S-11*,2*7Z%3,%2C%1D*%S-11*,2*7%-,*%+31
H;1%2+%H,3H*,.6(%R*Y2=*7%H3V*,*4%73.*.6%S6%/?%8-2+7%V2..%+31%V3,Q%2C%1D*2,%/?%H3V*,%7;HH.6%27%=;1%3CC%C3,%-+6%,*-73+Z
D3V*Y*,%S,2*C.6(
k 52<+-.7%7*+1%S6%V2,*.*77%1,-+78211*,7%8-6%S*%S.3=Q*4%3,%,*C.*=1*4%S6%8*1-.%S*C3,*%1D*6%,*-=D%1D*%-.-,8%,*=*2Y*,(%JY*+
2C%1D*%72<+-.%H-1D%D-7%S**+%,*=*+1.6%=D*=Q*4%4;,2+<%-%V**Q.6%1*71Z%S.3=Q-<*%=-+%3==;,%2C%-%8*1-.%3Su*=1%27%83Y*4%2+13
1D*%H-1D(
k /%;7*,%8-6%+31%S*%-S.*%13%,*-=D%-%H-+2=%3,%*8*,<*+=6%S;113+%g;2=Q.6%*+3;<D(
k aD2.*%783Q*%4*1*=13,7%D-Y*%H.-6*4%-%Q*6%,3.*%2+%,*4;=2+<%,*724*+12-.%C2,*%4*-1D7Z%1D*6%8-6%+31%-=12Y-1*%3,%H,3Y24*
*-,.6%V-,+2+<%C3,%-%Y-,2*16%3C%,*-73+7%2+%-7%8-+6%-7%"Av%3C%-..%C2,*7(%538*%3C%1D*%,*-73+7%783Q*%4*1*=13,7%;7*4%2+
=3+u;+=123+%V21D%1D27%5671*8%8-6%+31%V3,Q%-,*%-7%C3..3V7(%583Q*%4*1*=13,7%8-6%D-Y*%S**+%28H,3H*,.6%2+71-..*4%-+4
*4(% 583Q*% 4*1*=13,7% 8-6% +31% 7*+7*% C2,*7% 1D-1% 71-,1% VD*,*% 783Q*% =-++31% ,*-=D% 1D*% 4*1*=13,7Z% 7;=D% -7% 2+
=D28+*67Z% 2+% V-..7Z% 3,% ,33C7Z% 3,% 3+% 1D*% 31D*,% 724*% 3C% =.37*4% 433,7(% 583Q*% 4*1*=13,7% -.73% 8-6% +31% 7*+7*% -% C2,*% 3+
-+31D*,%.*Y*.%3C%-%,*724*+=*%3,%S;2.42+<(%/%7*=3+4%C.33,%4*1*=13,Z%C3,%*K-8H.*Z%8-6%+31%7*+7*%-%C2,71%C.33,%3,%S-7*8*+1
C2,*(%B3,*3Y*,Z%783Q*%4*1*=13,7%D-Y*%7*+72+<%.2821-123+7(%b3%783Q*%4*1*=13,%=-+%7*+7*%*Y*,6%Q2+4%3C%C2,*%*Y*,6%128*(
I+%<*+*,-.Z%4*1*=13,7%8-6%+31%-.V-67%V-,+%-S3;1%C2,*7%=-;7*4%S6%=-,*.*77+*77%-+4%7-C*16%D-\-,47%.2Q*%783Q2+<%2+
S*4Z%Y23.*+1%*KH.3723+7Z%*7=-H2+<%<-7Z%28H,3H*,%713,-<*%3C%C.-88-S.*%8-1*,2-.7Z%3Y*,.3-4*4%*.*=1,2=-.%=2,=;217Z%=D2.4,*+
H.-62+<%V21D%8-1=D*7Z%3,%-,73+(%R*H*+42+<%;H3+%1D*%+-1;,*%3C%1D*%C2,*%-+4&3,%1D*%.3=-123+7%3C%1D*%783Q*%4*1*=13,7Z%1D*
4*1*=13,Z%*Y*+%2C%21%3H*,-1*7%-7%-+12=2H-1*4Z%8-6%+31%H,3Y24*%7;CC2=2*+1%V-,+2+<%13%-..3V%-..%3==;H-+17%13%*7=-H*%2+%128*
13%H,*Y*+1%2+u;,6%3,%4*-1D(
Continued –