PI
1.
2.
3.
4.
5.
6.
7.
State
Standb
Voice
C
Data
ca
SMS
URC
8.
INOUT
:
DC
IN
Jack:
D
Power
Enab
board.
Whe
Power
Indic
EXT
‐
EN:
Exte
circuit.
S/W:
Onboa
Power
ON
s
Automatic)
RI
LED
and
B
R
by
H
Call
Th
ch
1.
2.
all
Th
ch
1.
2.
Th
ch
Th
it
Buzzer
Enab
DC
Input
PIN
ble
Switch:
T
n
pressed
tu
cator
LED:
M
ernal
enable
ard
switch
to
election
jum
Buzzer:
Incom
I
Response
igh
he
PIN
is
cha
hanged
to
Hi
.Establish
th
.Hang
up
the
he
PIN
is
cha
hanged
to
Hi
.Establish
th
.Hang
up
the
his
PIN
chan
hanged
to
HI
his
PIN
chan
is
changed
t
ble
Jumper:
J
N
for
GSM
M
his
is
Power
urns
ON
the
b
odem
powe
es
pin
to
turn
o
turn
ON
or
mper:
To
sele
ming
messag
anged
to
Low
igh
e
call
e
call
anged
to
Low
igh
e
call
e
call
ged
to
LOW
IGH.
ged
to
LOW
to
HIGH.
Jumper
to
en
ODEM.
enable
switc
board
and
w
r
indicator
L
n
ON
or
OFF
S
r
OFF
SIM900
ect
the
powe
ge
and
call
in
w. when
any
w.
when
any
and
kept
LO
and
kept
LO
nable
or
disa
ch
to
Turn
O
hen
released
ED.
SIM900A
mo
0A
module
m
er
ON
mode
o
ndicator
LED
of
the
follow
of
the
follow
OW
for
120m
OW
for
120m
able
onboard
N
or
turn
OF
d
turns
OFF
t
odule
with
ex
manually.
of
the
SIM90
and
buzzer.
wing
events
o
wing
events
o
s
when
SMS
s
when
URC
d
buzzer.
FF
power
to
t
the
board
xternal
contr
00A
(Manual
occurs
the
PI
occurs
the
PI
is
received
a
is
reported
the
rolling
or
IN
will
IN
will
and
then
and
then
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