Neltronics OBD-400, User Manual, Page: 4 / 7

Status Indicator
indicator status
OBD LED
Blinking (on 0.5s, off 0.5s) — trying to access OBD
ON — successful OBD communication
OFF — OBD is not available
GSM LED
Fast blinking (on 0.5s, off 0.5s) --network searching
Slow blinking (on 0.5s off 2.5s) --registered network
ON--logged into the server
OFF--GSM off
GPS LED
Blinking (on 1s, off 1s) -- GPS signal is good
ON — searching for GPS signal
OFF
—
GPS off