Westermo MR-2x0 - Manual (Page 18)

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LED Indicators MR-210 / MR-260
LED Status Description
PWR OFF Unit has no power
GREEN All OK
RED Lit until unit has started up
LAN OFF No link
GREEN Link established
GREEN FLASH Data traffic indication
WAN OFF No Service
1 BLINK GPRS Mode
2 BLINKS EDGE Mode
3 BLINKS UMTS (3G) Mode
4 BLINKS HSDPA Mode
5 BLINKS HSUPA Mode
3G /
GPRS NET OFF No wireless network has been detected
GREEN A wireless network has been detected
SIM OFF No valid SIM installed
GREEN A valid SIM card is installed in the unit
DAT OFF No data is being transferred over the wireless network
GREEN Data is being transferred over the wireless network
SIGNAL ALL OFF No signal / less than –113 dBm
1 LED GREEN Low signal strength / between –112 dBm and –87 dBm
2 LEDs GREEN Medium signal strength / between –86 dBm and –71 dBm
3 LEDs GREEN Strong signal strength / between –70 dBm and –51 dBm
DTE OFF No connection on serial port, or no data is transmitted or
received on the serial port
GREEN Terminal connected to the serial port and the DTR signal
is on
GREEN FLASH Data is transmitted or received on the serial port.