Issue with DOUT1 on Teltonika FMC125 – Unexpected Flashing Behavior

TELEMATICS
1

We’ve encountered an issue while configuring DOUT1 on the Teltonika FMC125.

:white_check_mark: Configuration & Expected Behavior:
Using the SMS command setdigout 1, the device responds with:
:pushpin: DOUT1:1 timeout:INFINITY

This suggests that DOUT1 should remain ON indefinitely (state 1).

:warning: Actual Behavior:
Instead of staying ON, DOUT1 toggles every ~10 seconds, switching from 1 to 0 and back to 1, effectively flashing every 10 seconds.

:microscope: Testing Details:
We’ve tested this using:
:check_mark: A 12V 40A relay
:check_mark: A 12V car bulb
In both cases, the behavior remains the same.

:red_question_mark: Question:
Has anyone else experienced this behavior? Could this be a firmware or configuration issue? Any insights from Teltonika’s support team would be greatly appreciated.

#Teltonika #FMC125 #DOUT1 #IoT #Telematics #Troubleshooting

2

Hi @ATMSAS

Good day, please check the device configuration make sure that you are not using DOUT 1 with other features or scenario.

Use the latest firmware for FMC125: https://wiki.teltonika-gps.com/view/Special:Redirect/file/FMB.Ver.03.29.00.Rev.21_and_configurator.zip

If the issue still persist, please contact your sales manager or create an HD ticket.
Provide the logs, configuration file etc.

Best Regards
Maynard C

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