TRB141 LEDs

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Main Page > TRB Gateways > TRB141 > TRB141 Manual > TRB141 LEDs

This page contains information the different types of LEDs and their behaviour on a TRB141 device.

Power LED

The power LED is located on the bottom left corner of the front panel, just under the power connector.

Networking trb141 manual leds power led.png

It indicates whether the device is powered on or not.

State Description
LED turned on Device is powered on.
LED turned off Device is not powered on.

Mobile network type LEDs

The mobile network type LEDs are located near the SIM card slot.

Networking trb141 manual leds mobile network type leds.png

They display which type of Internet connection is currently active.

Action Description
2G LED turned on Device is connected to a 2G network.
3G LED turned on Device is connected to a 3G network.
4G LED turned on Device is connected to a 4G network.
2G blinking Device is connected to a 2G network but hasn't received an IP address.
3G blinking Device is connected to a 3G network but hasn't received an IP address.
4G blinking Device is connected to a 4G network but hasn't received an IP address.
2G, 3G & 4G LEDs blinking at the same time every 500 ms No SIM card or incorrect PIN.
2G, 3G & 4G LEDs turns on and off in a sequence one after the other The device is attempting to connect to a mobile network operator.

Mobile signal strength indication LEDs

The mobile signal strength indication LEDs are located near the SIM card slot.

Networking trb141 manual leds mobile signal strength leds.png

The number of lit up LEDs represents a different mobile signal strength (RSSI) value in dBm.

No. of lit up LEDS Signal strength
0 ≤ -111 dBm
1 -110 dBm to -97 dBm
2 -96 dBm to -82 dBm
3 -81 dBm -67 dBm
4 -66 dBm to -52 dBm
5 ≥ -51 dBm