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3. Introduction and Features (Continued)
3.2 LED Indicators
LED
Blink Quickly (Once
per second)
State
No SIM card inserted
TR-151 is searching
GSM network
LED
Keeps On
State
TR-151 has not received
a GPS fix
TR-151 is attempting to
attain a GPS fix
LED
Keeps
On
Battery
State
Low
LED
Orange
State
TR-151 connected to charger or
USB to Mini-USB cable.
GSM LED
Blink Slowly (Once
every 3 seconds)
SIM card is registered
to GSM network.
TR-151 is sending data
to GSM network
GPS LED
Blink Slowly (Once
every 3 seconds)
TR-151 has attained a
GPS fix
Status LED
Off
1 time
TR-151
TR-151 is
is in
being
standby
turned
mode
"ON".
Power LED
Blink
2 times
TR-151 is
being turned
"OFF".
Off
LED shuts down after battery charge
completion.
7
Page
of 18
Off
TR-151 is in standby
mode
Off
TR-151 is in standby
mode
3 times
5 times
SOS button
Error occurs
is pressed
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