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IoT
5
NTC-140 -
4G M2M Router
Overview of LED indicators
LED
ICON
NAME
COLOR
STATE
DESCRIPTION
Power
Off
Power off
Double flash
Powering up
On
Power on
On
Power on in recovery mode
Slow flashing
Hardware error, such as SIM not inserted.
GPS
1
/
Customisable
LED
Off
GPS function disabled
Slow flashing
GPS function is enabled but no satellite
detected
On
Satellite detected, location acquired
Network
Off
Radio Off
On
Connected via WWAN
Blinking
2
Traffic via WWAN
Slow flashing
Connecting PDP
On
Registered on Network
Slow flashing
Registering network
Slow flashing
SIM PIN locked
Fast flashing
SIM PUK locked
On
Can’t connect
Signal
strength
On
LTE signal
On
WCDMA signal
On
GSM signal
1 GPS is only available on the NTC-140-02
2 The term “blinking” means that the LED may pulse, with the intervals that the LED is on and off not being equal. The
term “flashing” means that the LED turns on and off at equal intervals.
