B)
Step
1:
P
Step
2:
C
end
at
c
Step
3
:
I
Step
4:
:
Step
5:
N
Step
6:
N
switch
O
NOTE:
A
once
the
64ms
ON
POWERING
Put
the
jump
Connect
one
omputers
se
Insert
a
valid
:
Apply
the
9
Now
press
th
Now
press
o
OR
apply
the
After
power
O
e
sim900/90
N
Time/3000
HIGH
LOW
SIM900/900
per
between
e
end
of
the
s
erial
port.
d
SIM
card
in
9V~12V
DC
vo
he
Power
ON
nboard
Swit
pulse
shown
ON
the
netw
0A
modem
i
0ms
OFF
Tim
5Sec>T
0A
modem
in
ST
&
MAN
P
serial
Cable
a
the
onboard
oltage
sourc
N
switch
to
tu
ch
(S/W)
and
n
below
at
E
work
LED
will
s
registered
me.
TON>1
n
Manual
M
PINS.
at
the
DB9
se
d
SIMCARD
h
e
at
DC
‐
IN
ja
urn
on
the
b
d
keep
it
pre
XT
‐
EN
pin.
blink
at
the
to
the
netw
TOFF>=
Mode:
erial
connect
holder.
ack
of
SM900
oard.
essed
for
at
le
rate
of
64ms
ork
the
netw
1.7
Sec
tor
of
the
mo
0/900A
mod
east
1
sec
an
s
ON
time/8
work
LED
will
odem
and
an
em.
nd
then
relea
800ms
OFF
T
l
blink
at
the
nother
ase
the
ime
and
e
rate
of
All manuals and user guides at all-guides.com
