The functions of LED are indicated on the table below.
LED
Color
State
Description
PWR1 (DC)
Green On
Power is being supplied from power input 1.
PWR2
(Terminal Block)
Green On
Power is being supplied from power input 2.
READY
Green On
System startup is complete and the system is operating with IP
address obtained.
Blink
Device has been located.
Off
Power is off, or the system is booting up.
FAULT
Red
On
System configuration error or a relay event has occurred.
Blink
IP address conflict.
Off
Power is off, or there is no error condition.
SINGNAL
(3LEDs)
Green
On
Number of LEDs to indicate cellular signal level when registered
to a base station.
Signal LED 1: 0 < RSSI ≤ 12
Signal LED
2: 12 < RSSI ≤ 21
Signal LED 3: 21
< RSSI ≤ 31
SIM1
Amber On/Off SIM 1 is active or inactive.
Blink
SIM 1 is not inserted or PIN code is incorrect.
SIM2
Amber On/Off SIM 2 is active or inactive.
Blink
SIM 2 is not inserted or PIN code is incorrect.
MLB-G4202
4G
Amber
On
Registered to a base station with cellular connection in LTE
mode
3G
Amber
On
Registered to a base station with cellular connection in UMTS
or HSPA mode
MLB-G4201
3G
Amber
On
Registered to a base station with cellular connection in UMTS
or HSPA mode
2G
Amber
On
Registered to a base station with cellular connection in GPRS or
EDGE mode
Table 4: LED Functions of MLB-G420X
Содержание MLB-G420 Series
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