| W
ireless
M2M
5
NTC-140W Series -
4G WiFi 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
WiFi
Off
Radio Off
On
WiFi Access Point mode
Blinking
1
Traffic via WiFi
On
WiFi connected in client mode
Blinking
1
Traffic via WiFi in client mode
Network
Off
Radio Off
On
Connected via WWAN
Blinking
1
Traffic via WWAN
Slow flashing
(2s on, 2s off)
Connecting PDP
On
Registering 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 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.
