GE 940, Instructions For Use Manual

Page: 23 / 36

Connect the reader to the micro 19
No
te
:
1
A 47
0 o
hm, 1/
2W
, pul
l-up r
es
isto
r m
ay be r
equi
red b1
2
VD
C and
R
EADER D
AT
A 1. Th
e
pu
ll-up
re
sisto
r sho
ul
d
be
in
stal
le
d at the
mic
ro
co
nt
ro
lle
r’
s
te
rm
in
al blo
ck
. R
ef
er
to
th
e
ap
pr
op
riat
e
mic
ro
co
nt
ro
lle
r m
anua
l f
or
in
stal
lati
on
re
quir
em
en
ts
.
2
Shi
el
ded cable is r
equ
ired.
C
on
nect all shi
elds t
oget
her at the micr
o
or
pan
el
en
d
us
ing
1
4-A
W
G
w
ire
. D
o no
t mak
e shield
co
nnect
io
ns at the r
eader
.
3
Ref
er
to
th
e a
ppr
op
riat
e
mi
cr
oc
on
tr
ol
le
r manu
al
fo
r s
pec
ifi
c wir
ing
deta
ils.
4
Blo
ck
in
g d
io
de
m
ay be
type
1N5
817
o
r G
E par
t n
umbe
r 5
212
2400
1 (
inc
lu
de
d
w
ith r
eade
r). The
di
od
e mu
st be
in
st
alled in a secur
e
lo
cat
io
n, no
t acce
ss
ibl
e
th
ro
ugh
th
e
re
ader r
em
ov
al.
5
Pr
ot
ec
tio
n d
io
de
s mu
st be
1
N
40
02, 1N
400
3, o
r 1
N
40
04 f
or
th
e do
or
s
tri
ke
asse
m
bly.
6
Fuse, po
wer sup
ply, do
or
str
ik
e,
dio
des, and r
el
ay ar
e pr
ov
ided by the ins
tall
er
.
7
Reques
t t
o
exi
t (R
EX
) t
er
m
in
al
s
on t
he r
ead
er
ar
e not
to
be
connect
ed for
U
L l
is
te
d
in
st
al
la
tio
ns
.