WITURA
TECHNOLOGY
SDN
BHD
|
WT
‐
1672A GSM
Power
Outage
Alarm User
Manual
V1.8
13
Production
Specifications
Operation
Voltage
110
‐
240
Vdc
Operating
Current
Maximum
500mA,
typically
55mA
Relay
Contacts
1
x
Normally
Open
and
Normally
Closed
Contacts
maximum
switching
capacity
20
amps
@230v
ac
per
relay
GSM
Frequency
MHz
GSM
850,
GSM
900,
GSM
1800,
GSM
1900
Humidity
Less
Than
80%
RH
Operating
Temperature
‐
20c
to
55c
Physical
Size
130
x
100
x
50mm
Weight
500
Grams
Indicators
Relay
,
Telco
,
Power
Protection
IP
65
Weather
Proof
Casing
Approvals
C.E,
FCC,
ETSI
Troubleshooting
1.
Red
power
LED
not
alight
Ensure
that
your
DC
power
supply
is
connected
correctly,
positive
(+)
to
terminal
220v
and
negative
(
‐
)
to
terminal
N.
Verify
12
volts
is
present
using
a
volt
meter
2.
Blue
network
LED
flashing
every
one
second
and
not
every
3
seconds
Ensure
your
SIM
card
has
been
activated
and
that
the
PIN
request
has
been
disabled.
If
the
unit
is
in
a
low
signal
strength
area
consider
using
an
external
GSM
antenna
or
changing
to
another
network
provider
3.
I
am
not
receiving
confirmation
test
messages
when
program
the
administrators
number
Ensure
your
telephone
number
is
in
the
Administrator
list
and
that
sending
text
messages
to
your
number
is
enabled.
4.
I
am
not
receiving
any
text
messages
when
initially
programming
the
unit
Ensure
the
unit
is
connected
to
the
GSM
network
by
observing
the
blue
network
LED;
it
should
be
flashing
once
every
3
seconds
(see
2
above).
Ensure
the
SIM
card
has
credit
5.
The
unit
has
been
working
for
several
months
and
has
now
stopped
responding
to
calls
and
text
commands
Most
but
not
all
PAY
SIM
cards
will
be
de
‐
activated
by
the
network
if
not
used
to
make
an
outgoing
voice
call
or
send
an
SMS
text
message
within
a
specific
period.
To
prevent
this
simply
send
a
txt
command
*0*PW#,
then
*2*,
it
will
reply
by
text
message,
do
this
once
a
month
to
keep
the
SIM
card
active
