2.5 Overview of LED Indicators

The 2NLiftGate status is signaled by LED indicators on the device front side. Refer to the table below for the statuses.

Flashing Frequencies
Slow flashing	Flashes 1:1, interval 1 s = 0.5 s light on (ON) + 0.5 s no light (OFF)
Fast flashing	Flashes 1:1, interval 0.2 s = 0.1 s light on (ON) + 0.1 s no light (OFF)
Short flashing	Interval 4 s = 0.2 s light on (ON) + 3.8 s no light (OFF)

LED Indicators
DEVICE STATUS Indicates the general system status.	Blue – device status OK, device operational
	Blue, slow flashing – device error that does not affect the full functionality of the device
	Red – temporary error (to be solved automatically, e.g. provider service failure)
	Red, slow flashing – permanent error (admin intervention is required, e.g. via the device web interface)
	Red, fast flashing – HW error, on-site service intervention is required (e.g. DSL short-circuit, battery error/defect)
POWER Indicates the general power supply status.	Blue – external supply is progress, battery is kept charged
	Blue, short flashing – external supply in progress, low battery life
	Blue, slow flashing – external supply in progress, battery is being charged (90–100 %)
	Blue, fast flashing – external supply in progress, battery is being charged (0–90 %)
	Red – battery supply in progress, battery capacity over 50%
	Red, slow flashing – battery supply in progress, battery capacity below 50%
	Red, fast flashing – battery supply in progress, battery capacity critically low (less than 10 %)
	No light indication – battery disconnected
CELLULAR NETWORK Indicates the mobile network connection status	Permanently on – SIM OK, Internet connection available. The LED color signals the network technology used: Yellow – 2G Green – 3G Blue – 4G Slow network LED flashing indicates that the SIM card and registration are OK, but the Internet connection is unavailable.
	Red, slow flashing – SIM OK, network search in progress
	Red, fast flashing – SIM error (PIN unset or card rejected by network)
	No light indication – SIM not inserted
SIGNAL STRENGTH Indicates the signal strength.	Blue – strong signal (> = −80 dBm)
	Green – medium signal (< = −80 dBm)
	Red – weak signal (< −100 dBm)
	No light indication – no signal (< −110 dBm)
MOBILE DATA Indicates the Internet availability via a module.	Blue – connection is working Permanently on – active primary connection Slow flashing – active backup connection
	Red – connection is not working
	No light indication – connection is disabled (in configuration)
	See below for examples of connection statuses and signaling.
WAN Indicates the Internet availability via WAN.	Blue – connection is working Permanently on – active primary connection Slow flashing – active backup connection Fast flashing – Internet connection unavailable
	Red – connection is not working Fast flashing – no connection is available (MOBILE DATA or WAN)
	No light indication – connection is disabled (in configuration)
	See below for examples of connection statuses and signaling.
CABIN SWITCH 1 & 2 Indicates the states of connected cabin switches 1, 2.	Blue – voltage OK, connected
	Blue, slow flashing – disconnected (no consumption)
	Red – voltage warning (overconsumption, current > 750 mA)
	Red, fast flashing – voltage error (consumed current > 1050 mA, overload or short-circuit)

Examples of Connection Statuses and Signaling

The MOBILE DATA and WAN LEDs indicate the general network connection of the device.

Active Primary Connection – both LEDs are permanently blue.
Active Backup Connection (Primary Connection unavailable) – the primary connection LED is permanently red, the backup connection LED is flashing blue.
Example:
- MOBILE DATA LED is permanently red and WAN LED is flashing blue – the Internet connection is established using backup connection via WAN.
- MOBILE DATA LED is flashing blue and WAN LED is permanently red – the Internet connection is established using backup connection via MOBILE DATA.
No Connection Available – both LEDs are red and fast flashing.