Question about I/O pins

Hello, I have a question about FMC, FMB devices. Is it possible to connect a keypad to them directly and getting input?
I think connecting keypad to some microcontroller and then using RS242/485 connect it to your device, but that seems cumbersome, so I was wondering is there any way to connect it directly to your devices?

Hi Marus,

Good day, there are different ways and modes how to connect external devices to our devices.

  1. via Serial COM : FMM640 RS-232 and RS-485 - Wiki Knowledge Base | Teltonika GPS (
  2. Bluetooth : How to add a BLE preset to the configurator - Wiki Knowledge Base | Teltonika GPS (

I didn’t try to connect a keyboard but it depends if the keyboard support our interface, and maybe firmware development is needed, if you need this requirement please contact your sales manager or create an HD ticket.

If you don’t have any contact with our Sales managers, please contact them on our official website and click on the “Contact Us” button. When you click, please fill out the form and submit it. Note: as a topic, please choose “Vehicle telematics”. Or you can send an e-mail with a description of your situation to us: Teltonika - IoT, Internet of Things

Best Regards
Maynard C

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