Hello,
Thank you for the question.
First, you must connect the battery to the device, then power the device to a 12V source (it is better to use a variable source)
It will work normally with Input voltage range from 10 - 30 V DC.
https://teltonika-gps.com/product/fmb001/#features
Also, please check if the PC driver is installed. You may download the driver in the link below if it is not installed yet.
https://teltonika-gps.com/product/fmb001/#downloads
If you can confirm all the needed steps are done and still face the same, please contact your Sales manager.
If you don't have any contacts with our Sale managers, please contact with them on our official
website
https://teltonika-gps.com/
and click on the "Contact Us" button. When you will click, please fill the form and submit it.
Note: as a topic, please choose "Vehicle telematics".
Or you can send an e-mail with description of your situation to info@teltonika.lt
Best Regards,
