File
Name
Origin
LY
‐
90MT
User
Guide
Creator
Linda
Chen
Project
LY
‐
90MT
Creation
Date
Update
Date
2011
‐
05
‐
16
2013
‐
09
‐
16
Sub
Project
User
Guide
Page
5
of
17
Revision
V2.0
Confidential
External
Documentation
5.
About
LY
‐
90MT
5.1
View
and
Buttons
No.
Item
Description
1
GPS
LED
(Blue)
Indicating
GPS
and
battery
status,
please
refer
to
below
LED
indications.
2
GSM
LED
(Green)
Indicating
GSM
status,
please
refer
to
below
LED
indications.
3
Answer/Hand
‐
up
Button
¾
Press
to
receive
an
incoming
call.
¾
Press
to
complete
a
conversation.
¾
Long
press
for
2
seconds
to
send
GPRS
message
to
the
server
when
no
incoming
call
or
conversation
is
received.
4
SOS
Button
¾
Long
press
for
2
seconds,
LY
‐
90MT
will
dial
three
preauthorized
phone
numbers
in
turn.
It
will
stop
dialing
when
one
number
answers.
Meanwhile,
LY
‐
90MT
will
send
an
SMS
to
the
preauthorized
phone
number
and
send
GPRS
message
to
the
server
if
GPRS
function
is
enabled.
¾
Press
to
wake
up
if
LY
‐
90MT
is
in
sleep
mode.
5
Microphone
It
will
run
automatically
when
using
listen
‐
in
and
call
functions.
6
Speaker
It
will
run
automatically
when
using
call
function.
7
Power
On/Off
Button
¾
Long
press
for
2
seconds
to
turn
on
LY
‐
90MT.
¾
Long
press
for
2
seconds
to
turn
off
LY
‐
90MT.
¾
Press
to
wake
LY
‐
90MT
up
from
sleep
mode,
power
LED
will
slowly
flash
for
10
seconds.
8
Mini
USB
Mini
USB
is
used
for
charging,
connecting
to
computer
for
setting
up
parameters,
updating
software
and
so
on.
Copyright
©
2013
Original
All
rights
reserved.
‐
5
‐
