User's Manual
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Queclink Wireless Solutions Manuals
Electronics
GSM Module
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7.
SIM
C
a
r
d
A
s
s
how
n i
n
F
i
gur
e
4,
c
onnec
t
i
ng
a
l
arge
vol
um
e c
apac
i
tor suc
h
as
10uF i
n
the S
I
M
_V
DD
l
i
ne
c
oul
d
l
ead t
o
f
ai
l
ur
e
of
de
tec
ti
ng
t
he S
IM
c
ar
d.
A
c
apac
i
tor be
tw
ee
n
100nF a
nd
1uF
i
s
rec
ommended.
F
igu
r
e
4
:
Cir
c
u
it
of
th
e
SIM c
a
r
d
1
...
...
19
20
21
22
23
...
...
30
