4.4 Operation Instructions
(1)
Power On/Off
Power
On:
Step 1.
When it is off, press the
power button
for 5 second to switch on the power.
Step 2.
After power on,
GSM LED
will light on
first (on 1 second and off 2 seconds for
searching GSM network, or on 0.01
second and off 2.99 seconds after get
GSM network).
Step 3
.
Some 10 seconds later,
GPS LED
starts to
flash (on 1 second and off 2 seconds for
searching GPS, or on 0.01 second and off
2.99 seconds after GPS fixed). By then,
the device is ready to work.
Power Off:
When it is on, press the power button for 3 seconds to switch off the power;
Power/GPS/GSM LED will shut off right now. By then, the device is turned off.
(2)
SOS Emergency Help Function
When SOS button is long pressed, PT-911 will send a SMS message and make