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www.sdcsecurity.com • E-mail: [e-mail]
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2"#$>#456,p8$ZQn$SQLT$6+,$^0Y$SQ72"#.$Q(A$QKA$QH$-.$QcT$2#.;7+6=8?
W-=7,$W262#$0125128
!"#$2E-$8-=7,$8262#$-125128$S0125128$[\$g$[KT$:6+$@#$5.-<.6;;#,$2-$
6:27D62#$,1.7+<$D6.7-18$:-+,727-+8?$$!"#8#$-125128$:6+$@#$18#,$2-$6:27D62#$
7+,7:62-.8$-.$8-1+,#.8?$$W##$X7<?$H$9-.$E7.7+<$#F6;5=#8$187+<$2"#$8-=7,$
8262#$-125128?
X7<?$\$$r687:$R--.$*+826==627-+$$
X7<?$K$$r687:$R--.$*+826==627-+$V7.7+<
^
M^
M0
^
M^
M0
#1$V**%$
5*!,(,*#$!Y,(10
#*$%"&'"!()(*)
"+,($!Y,(10
WQMWQ
kZ0JMR
ZQtJQW!B!0BQn*!
kZ0JMR
kZ0JMR
kZ0JMR
0J!)J!$[\
0J!)J!$[K
QCZ!d$
kZ0JMR$
^0MMQ^!*0M
C::#88-.4$!#.;7+6=8
f
c
L
H
K
\
'
(
(*$5*Y"%$!'55.\
]"\$5-V$5*Y"%
43)3M$^*.(!
-1$*%$V1
}
q
B
-'+,.,-%\$%".-\
3$-/5!$_$3R^V1$
/-+
}
M^
M0
^0Y
6-,.$!"1'%"$1*##"1(,*#
6-,.$!-6"$1*##"1(,*# /-,#$%".-\
N$-/5!$_$3R^V1$
/-+
}
M^
^0Y
M0
Y67+$Z#=64
(
'
\
C1F$Z#=64
(
'
\
3)$)E.
(
'
)`a*MW!CPPC!*0M$*MW!aC::#88$^-+2.-=8a*MW!B&'(a*MW!B&'()?D8,$$$$$Z#D$R$$$$(IB(K$$$$$)6<#$K
X7<?$H$$J87+<$W-=7,$W262#$0125128
OUTPUT #3 LIGHTS AN LED
OUTPUT #4 LIGHTS AN LED AND SOUNDS A BEEPER
EXAMPLE #1:
)0VQZ
WJ))Pj
q
PQR
PQR
(3u
(3u
B
Z
0J!)J!$[\
0J!)J!$[K
QPQ^!Z0M*^$
rQQ)QZ
OUTPUT #3 LIGHTS A LAMP POWERED FROM AN EXTERNAL SOURCE
OUTPUT #4 TRIGGERS A NORMALLY OPEN ALARM PANEL ZONE
EXAMPLE #2:
0J!)J!$[\$^0Y
0J!)J!$[K$^0Y
)0VQZ$
W0JZ^Q
0J!)J!$[\
QMR$0X$P*MQ$
ZQW*W!0Z
CPCZY$)CMQP
M0$v0MQ
^0YY0M
P0V$
]0P!CkQ$
PCY)
B
Z
0J!)J!$[K
EACH
OUTPUT
100 mA
MAXIMUM
C::#88-.4$!#.;7+6=8
\
'
(
K
C::#88-.4$!#.;7+6=8
\
'
2345
]7QA:G
O$S<?7C$HE?$$$$
]7QA:G$$$$
3$S<?7C$HE?
5ES7?$
!@AA=Q
"`>7?;:=$1E;>?E==7?
3$S<?7C$HE?
VEE?$!7;CE?
3$S<?7C$HE?
!>?<W7$5ES7?

6-1(*%\$V"6-'.(!
Y682#.$).-<.6;;7+<$^-,#www??wwwwwww?w?w???('\KHL$$
Q+2.4$^-,#$P#+<2"wwwwwwwwwwwwwww?ww??K$,7<728
Q+2.4$$Y-,#ww??wwwwwwwwwwwwww?w???^6.,$-.$)*M
Z#_1#82B2-B#F72$012512$Z#=64wwwwwwwww???????????M-$012512
C=6.;$W"1+2$012512w?wwwwwwwwwwwww?????????R786@=#,
X-.:#,$Q+2.4$012512wwwwwwwwwww??wwww??M-$012512
R--.$CU6.$012512wwwwwwwwwwwww??ww?w???M-$012512
Y67+$Z#=64$0+$!7;#wwwwwwwwwwwww??w??I'$W#:-+,8
C1F7=76.4$Z#=64$0+$!7;#wwwwwwwwwww?????wI'$W#:-+,8
W-=7,$W262#$012512$[\$0+$!7;#wwwwwwwww??????I'$W#:-+,8
W-=7,$W262#$012512$[K$0+$!7;#wwwwwwwwww??I'$W#:-+,8
R--.$W#+8#/*+"7@72$*+512wwwwwwwwww???ww??R--.$W#+8#
3#456,$P-:>-12$012512wwwwwwwwwwww??ww?R786@=#,
3#456,$C:27D#$012512wwwwwwwwwwww??w??w??R786@=#,
r##5#.$W-1+,8$V"#+$3#4$).#88#,wwwwwwww???wwwj#8
r##5#.$W-1+,8$R1.7+<$Z#=64$[(wwwwwwwww??w???ww?M-
r##5#.$W-1+,8$R1.7+<$Z#=64$['wwwwwwwwwww???w???M-
r##5#.$W-1+,8$R1.7+<$012512$[\wwwwwwwwwww$$$?????M-
r##5#.$W-1+,8$R1.7+<$012512$[Kwwwwwwwwwww????????M-
3#456,$P-:>-12$^-1+2www?www??????w?\$!.7#8$r#9-.#$P-:>-12
C+27B)688@6:>$!7;#wwwwww??ww???www?M-$C+27B)688@6:>
C12-BZ#=-:>wwwwwwwwwwwww???wwww?wwww?0+
";>7?<;B$5?EB?:FF<;B$/EG7
!"#$LB,7<72$Y682#.$).-<.6;;7+<$^-,#$S,#961=2$x$('\KHLT$78$18#,$
2-$#+2#.$).-<.6;;7+<$Y-,#?
5?7CCa$$K$2$K$/:C>7?$1EG7$K
Master Code = the current 6-digit Master Programming Code
!7>><;B$";>?Q$1EG7$.7;B>9 V7H:@=>a$M$G<B<>C
5?7CCa$PL$K$Length K$$
Length = 4-6 for entry code length
Note: If the Entry Code Length is going to be changed from the factory
default of 4 digits, make this change first before programming any entry
codes.
-GG<;B$:$#7S$'C7?
'C7?$5,#$*;=Q$-887CC$I#E$1:?GJ
5?7CCa$P4$K$'C7?$K$Code K$Code # Relay #
BBBB 0.$BBBB
'C7?$1:?G$:;G[E?$$5,#$-887CC
5?7CCa$PO$K$'C7?$K$Code K$Code # Relay # Present Card
User=User number to be added: 001-500
Code=The new entry code: 1-999999, depending on code length
Relay=Relay output entry code will activate:
1=Main Relay 2=Auxiliary Relay 3=Both Relays
10=Relay #1, toggled 20=Relay #2, toggled 30=both Relays toggled
12=Relay #1 toggled; Relay #2 timed open
21=Relay #1 timed open; Relay #2 toggled
!"#$4#==-E$7+,7:62-.$E7==$9=68"$_17:>=4$E"7=#$2"#$&'()$82-.#8$2"#$+#E$
18#.$7+9-.;627-+$7+$;#;-.4$$!"#$<.##+$7+,7:62-.$E7==$=7<"2$E"#+$2"#$
+#E$:-,#$6+,$:6.,$6.#$6::#52#,?$*9$2"#$18#.$+1;@#.$6=.#6,4$#F7828$
-.$6+$#+2.4$#..-.$"68$@##+$;6,#A$2"#$.#,$7+,7:62-.$E7==$=7<"2?$$R#=#2#$
2"#$18#.$6+,$.#B#+2#.$2"#$+#E$7+9-.;627-+$6<67+?
Note: Leading zeros (zeros before the code number, i.e.0001) do not need to
be entered when programming a new code. The 921P will internally add any
zeros to fill digits determined by the entry code length setting. Leading zeros
will have to be entered by the user when entering their code to gain access.
"?:C<;B$:$!<;B=7$'C7?
5?7CCa$P3$K$User K$$User K$$
User =The user number to delete (001-500)
!"#$4#==-E$7+,7:62-.$E7==$9=68"$_17:>=4$E"7=#$2"#$&'()$#.68#8$2"#$
18#.$9.-;$$;#;-.4?$$!"#$<.##+$7+,7:62-.$E7==$=7<"2$E"#+$2"#$:-,#$78$
#.68#,?
*@>A@>$(EBB=7$/EG7
V"#+$6+$-12512$78$5.-<.6;;#,$9-.$!-<<=#$Y-,#A$2"#$-12512$
6=2#.+62#8$9.-;$0XX$2-$0M$-.$9.-;$0M$2-$0XX$#6:"$27;#$72$78$
6::#88#,?$$V"#+$6+$-12512$78$2-<<=#,$-+A$2"#$<.##+$PQR$.#;67+8$
8-=7,$1+27=$2-<<=#,$-99?
!"#$.1=#8$9-.$6$2-<<=#$-12512$6.#`
If the output is OFF, it will turn ON and stay on until the next
activation.
If the output is ON, it will turn OFF and stay off until the next
activation.
An authorized PIN, Card, or REX input programmed to
momentarily activate that same relay will reset the relay to its
normal state.
"`<><;B$5?EB?:FF<;B$/EG7
5?7CCa$$$$$$$ K$
!"#$.#,$7+,7:62-.$E7==$=7<"2$692#.$#F727+<$).-<.6;;7+<$Y-,#
Note: The 921P will automatically exit Programming Mode after
two minutes of inactivity
mm
%7)7;>7?<;B$:$1EFF:;G$-H>7?$:$/<C>:W7
*9$2"#$.#,$7+,7:62-.$=7<"28A$87<+6=7+<$6+$7+:-..#:2$#+2.4A$-.$6+$
7+:-..#:2$>#4$78$5.#88#,$,1.7+<$5.-<.6;;7+<A$2-$:=#6.$2"#$>#456,$
6+,$.#B#+2#.$2"#$:-;;6+,`
5?7CCa$$$$$ 2$K$$
m
!7=78>$";>?Q$/EG7 V7H:@=>a$$1:?G$E?$5,#
W#28$2"#$#+2.4$;-,#$9-.$2"#$&'()?
5?7CCa$$PN$K$/EG7$K
Mode=Operating Mode(1-3)
1=Card or PIN; 2=Card Only 3=Card and PIN
)`a*MW!CPPC!*0M$*MW!aC::#88$^-+2.-=8a*MW!B&'(a*MW!B&'()?D8,$$$$$Z#D$R$$$$(IB(K$$$$$)6<#$H
b-!,1$5%*c%-//,#c
V"#+$2"#$&'()$Q+2.4^"#:>%$78$7+$).-<.6;;7+<$Y-,#$2"#$4#==-E$
7+,7:62-.$E7==$@=7+>$8=-E=4?$$C92#.$6$5.-<.6;;7+<$:-;;6+,$78$
8#=#:2#,A$2"#$4#==-E$7+,7:62-.$E7==$9=68"$.657,=4$E"7=#$2"#$>#456,$78$
E6727+<$9-.$18#.$7+512$,626?$$!"#$<.##+$7+,7:62-.$E7==$=7<"2$79$2"#$,626$
78$6::#52#,?$$!"#$.#,$7+,7:62-.$E7==$=7<"2$79$6+4$5.-<.6;;7+<$,626$78$
#+2#.#,$7+:-..#:2=4A$6+,$2"#$:-;;6+,$E7==$"6D#$2-$@#$91==4$.#B
#+2#.#,?$$$$$
-GG<;B$$/@=><A=7$!7d@7;><:=$1:?GC
5?7CCa$PR$K$4
C>
User K$1EG7$K$1EG7$K$%7=:Q$K$#@Fe7?$EH$@C7?C
K$5?7C7;>$4
C>
8:?G$
1
st
User =Starting user number to add
Number of users = Total number of consecutive cards to add
!"#$4#==-E$7+,7:62-.$E7==$9=68"$_17:>=4$E"7=#$2"#$&'()$#.68#8$2"#$
18#.$9.-;$$;#;-.4?$$!"#$<.##+$7+,7:62-.$E7==$=7<"2$E"#+$2"#$:-,#8$
"6D#$@##+$$6,,#,?
-GG<;B$$/@=><A=7$#E;)!7d@7;><:=$1:?GC
5?7CCa$PU$K$4
C>
User K$1EG7$K$1EG7$K$%7=:Q$K$#@Fe7?$EH$@C7?C
K$5?7C7;>$4
C>
8:?Gf$5?7C7;>$3
;G
8:?Gf$gf$5?7C7;>$=:C>$8:?G$
1
st
User =Starting user number to add
Number of users = Total number of consecutive cards to add
!"#$4#==-E$7+,7:62-.$E7==$9=68"$_17:>=4$E"7=#$2"#$&'()$#.68#8$2"#$
18#.$9.-;$$;#;-.4?$$!"#$<.##+$7+,7:62-.$E7==$=7<"2$E"#+$2"#$:-,#8$
"6D#$@##+$$6,,#,?

1E;H<B@?7$!7;C7$,;A@>$$ V7H:@=>a$$VEE?$!7;C7$
!"#$W#+8#$*+512$SQfT$:6+$@#$5.-<.6;;#,$9-.$#72"#.$R00Z$
WQMWQ$-.$*Md*r*!?
5?7CCa$$4P$K$,;A@>$K
Input=0 for Door Sense; =1 for Inhibit
V"#+$5.-<.6;;#,$9-.$R00Z$WQMWQA$79$6+$-5#+$:-+,727-+$-+$
2"#$7+512$-::1.8$@#9-.# 6::#88$78$<.6+2#,$SE72"$6+$#+2.4$:-,#$-.$
E72"$2"#$.#_1#82B2-B#+2#.$7+512T$6$X0Z^QR$QM!Zj$-12512$E7==$
-::1.?$$*9$6+$-5#+$:-+,727-+$.#;67+8$LI$8#:-+,8$692#. 6$.#=64$
6:27D627-+$9-.$6::#88A$6$R00Z$CsCZ$-12512$E7==$-::1.?$$M0!Q`$
X1+:27-+$(($6+,/-.$('$;182$6=8-$@#$#+6@=#,$2-$18#$R--.$W#+8#?$$
V"#+$5.-<.6;;#,$9-.$*Md*r*!A$6$:=-8#,$:-+,727-+$-+$2"#$7+512$
E7==$5.#D#+2$Z#=64$[($9.-;$6:27D627+<$E"#+$6::#88$78$.#_1#82#,$
E72"$6+$#+2.4$:-,#?$$!"78$;-,#$78$2457:6==4$18#,$E72"$6+$#F2#.+6=$
27;#.$2-$,786@=#$2"#$6::#88$,#D7:#$62$:#.267+$27;#8?
!7=78>$]7QA:G$-8><D7$*@>A@> V7H:@=>a$$#E$*@>A@>
W#28$E"7:"$-12512$6:27D62#8$E"#+$6+4$>#48$6.#$5.#88#,?$$!"78$
-12512$78$27;#,?$$*9$2-<<=#$;-,#$78$8#=#:2#,$9-.$2"#$-12512A$2"#$27;#.$
D6=1#$,#961=28$2-$'$8#:-+,8?
5?7CCa$4M$K$Output K$$
Output=Output to Activate(0-4)
1=Main Relay; 2=Auxiliary Relay; 3=Output #3; 4=Output #4;
0=No Output
!7=78>$]7QA:G$.E8WE@>$*@>A@> V7H:@=>a$$#E$*@>A@>
W#28$E"7:"$-12512$6:27D62#8$E"#+$2"#$>#456,$78$N=-:>#,$-12O$692#.$
2--$;6+4$7+:-..#:2$#+2.4$:-,#$622#;528?$!"#$=-:>-12$27;#$78$LI$
8#:-+,8?
5?7CCa$4L K$Output K$$
Output=Output to Activate (0-4)
1=Main Relay; 2 = Auxiliary Relay; 3=Output #3; 4=Output #4;
0=No Output / Lockout Disabled
!7=78>$-=:?F$!9@;>$*@>A@> V7H:@=>a$$#E$*@>A@>
W#28$E"7:"$-12512$6:27D62#8$,1.7+<$2"#$27;#$6::#88$78$<.6+2#,?$$
SJ8#$2"78$-12512$-2$8"1+2$6=6.;$:-+26:28$6226:"#,$2-$2"#$6::#88$
,--.?T$$!"78$-12512$;64$@#$27;#,$-.$2-<<=#,?
5?7CCa$4N$K$Output K$$
Output=Output to Activate(0-4)
1=Main Relay; 2=Auxiliary Relay; 3=Output #3; 4=Output #4;
0=No Output
!7=78>$%7d@7C>)>E)"`<>$*@>A@> V7H:@=>a$$#E$*@>A@>
W#28$E"7:"$-12512$6:27D62#8$E"#+$2"#$Z#_1#82B2-BQF72$7+512$78$
<.-1+,#,?$$!"78$-12512$;64$@#$27;#,$-.$2-<<=#,?
5?7CCa$4O$K$Output K$$
Output=Output to Activate(0-4)
1=Main Relay; 2=Auxiliary Relay; 3=Output #3; 4=Output #4;
0=No Output
%"+$<;A@>$>7?F<;:>7C$>EBB=7$EH$/:<;$%7=:Q
/:<;$%7=:Q$*;)><F7 V7H:@=>a$$P3$!78E;GC
W#28$2"#$=#+<2"$-9$27;#$2"#$Y67+$Z#=64$6:27D62#8$E"#+$2.7<<#.#,?
k.##+$PQR$78$-+$E"#+$Y67+$Z#=64$78$6:27D#?
5?7CCa$34$K$Seconds K$$
Seconds=Output time in seconds (0-60)
-@`<=<:?Q$%7=:Q$*;)><F7 V7H:@=>a$$P3$!78E;GC
W#28$2"#$=#+<2"$-9$27;#$2"#$C1F7=76.4$Z#=64$6:27D62#8$E"#+$2.7<<#.#,?
5?7CCa$33$K$Seconds K$$
Seconds=Output time in seconds (0-60)
(Typical Programming cont.)
W##$2"#$9-==-E7+<$#F6;5=#$2"62$8#28$#+2.4$:-,#8$('\K$9-.$+-.;6=$
6+,$HLcf$9-.$2-<<=#$-5#.627-+?
5?7CCa$$P4$K$'C7?$K$4$3$L$M$K$4$3$L$M$K$4$K
01=Programming Step; 1234=Entry Code; 1=Main Relay
5?7CCa$$P4$K$'C7?$K$N$O$U$R$K$N$O$U$R$K$3P$K
01=Programming Step; 5678=Entry Code; 20=Auxiliary Relay
toggle
-;><)(:FA7?$*@>A@> V7H:@=>a$$#E$*@>A@>
W#28$E"7:"$-12512$6:27D62#8$E"#+$2"#$C+27$!6;5#.$8E72:"$-+$2"#$
@6:>$-9$2"#$>#456,$78$6:27D62#,?$
5?7CCa$4U$K$Output K$$
Output=Output to Activate(0-4)
0=No Output; 2=Auxiliary Relay; 3=Output #3; 4=Output #4;
"?:C<;B$-==$";>?Q$1EG7C
WARNING: PERFORMING THIS COMMAND WILL REMOVE
ALL ENTRY CODES FROM THE MEMORY
5?7CCa$2U$K$P$P$P$P$P$P K$$P$P$P$P$P$P K$$
Note: The green indicator will light while the memory is being
erased. This may take up to 15 seconds .
)`a*MW!CPPC!*0M$*MW!aC::#88$^-+2.-=8a*MW!B&'(a*MW!B&'()?D8,$$$$$Z#D$R$$$$(IB(K$$$$$)6<#$L
!7=78>$6E?87G$";>?Q$*@>A@> V7H:@=>a$$#E$*@>A@>
W#28$E"7:"$-12512$6:27D62#8$79$2"#$R00Z$WQMWQ$7+512$-5#+8$
@#9-.#$6::#88$78$<.6+2#,?$$!"78$-12512$78$27;#,$6+,$:-+97<1.#,$
@4$2"#$.#=64$N0+B27;#O?
5?7CCa$$44$K$*@>A@>$K
Output=Output to Activate(0-4)
1=Main Relay; 2=Auxiliary Relay; 3=Output #3; 4=Output #4;
0=No Output
!7=78>$VEE?$-h:?$*@>A@> V7H:@=>a$$#E$*@>A@>
W#28$E"7:"$-12512$6:27D62#8$79$2"#$R00Z$WQMWQ$7+512$82648$
-5#+$LI$8#:-+,8$692#.$6::#88$78$<.6+2#,$S,--.$6U6.$27;#$78$
6,U1826@=#$187+<$X1+:27-+$'HT?$$!"78$-12512$78$+-2$27;#,?
5?7CCa$$43$K$*@>A@>$K
Output=Output to Activate (0-4)
1=Main Relay; 2=Auxiliary Relay; 3=Output #3; 4=Output #4;
0=No Output
"?:C<;B$/@=><A=7$'C7?C I!7d@7;><:=J
5?7CCa$P2$K$4
C>
User K$#@Fe7?$EH$@C7?C K$$
1
st
User =Starting user number to delete
Number of users = Total number of consecutive users to delete
!"#$4#==-E$7+,7:62-.$E7==$9=68"$_17:>=4$E"7=#$2"#$&'()$#.68#8$2"#$
18#.$9.-;$$;#;-.4?$$!"#$<.##+$7+,7:62-.$E7==$=7<"2$E"#+$2"#$:-,#$78$
#.68#,?

b77A$!E@;GC$V@?<;B$-@`<=<:?Q$%7=:Q V7H:@=>a$#E
W#=#:28$E"#2"#.$-.$+-2$2"#$>#456,$@##58$,1.7+<$C1F7=76.4$Z#=64$
6:27D627-+?
5?7CCa$M3$K$Sound K$$
Sound=1 for Yes, =0 for No
b77A$!E@;GC$V@?<;B$*@>A@>$KL V7H:@=>a$#E
W#=#:28$E"#2"#.$-.$+-2$2"#$>#456,$@##58$,1.7+<$012512$[\$
6:27D627-+?
5?7CCa$ML$K$Sound K$$
Sound=1 for Yes, =0 for No
b77A$!E@;GC$V@?<;B$*@>A@>$KM$ V7H:@=>a$#E
W#=#:28$E"#2"#.$-.$+-2$2"#$>#456,$@##58$,1.7+<$012512$[K$
6:27D627-+?
5?7CCa$MM$K$Sound K$$
Sound=1 for Yes, =0 for No
]7QA:G$.E8WE@>$1E@;> V7H:@=>a$L$->>7FA>C
W#28$2"#$+1;@#.$-.$7+:-..#:2$#+2.4$:-,#$622#;528$6==-E#,$
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Attempts=Number of attempts before lockout (2-7)
* Refer to Option 13 to Enable Lockout Feature
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Minutes=Time in minutes (2-4), 0=No Anti-passback
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5?7CCa$M4$K$Sound K$$
Sound=1 for Yes, =0 for No
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Seconds=Output time in seconds (0-60), 99=Toggle Mode
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0 = Light always OFF
1 = 30 sec light when activated (default)
2 = Light always ON
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Seconds=Output time in seconds (0-60), 99=Toggle Mode
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Sound=1 for Yes, =0 for No
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5?7CCa$2R$K$Master Code K$Master Code K$$
Master Code=The new 6-digit Master Programming Code
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CAUTION: Performing a master reset will clear the
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options to the factory default values. ALL ENTRY
CODES WILL BE ERASED. NOTE: The Master Code will
NOT be reset.
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Seconds=Held open time in seconds (1-60)

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