Professional 4G LTE Cat 1 GNSS tracker with Bluetooth, RS232 and RS485 for fleet integrations.

Teltonika FMC125 — 4G Professional Tracker with RS232 and RS485
The Teltonika FMC125 is a professional 4G LTE Cat 1 GNSS tracker with Bluetooth and serial interfaces for fleet integrations that need more than basic tracking.
It is suitable for projects requiring RS232/RS485 connectivity, peripheral integration and modern cellular network support, subject to regional order-code and carrier checks.
Tracking Hardware UK supplies FMC125 for B2B telematics projects and can help confirm interface requirements, network suitability and delivered quote.
Key Specifications and Deployment Notes
Connectivity: 4G LTE Cat 1 with GNSS positioning; regional bands depend on order code
Interfaces: RS232 and RS485 for professional integrations
Bluetooth: Bluetooth support for compatible accessories and configuration workflows
Installation: hardwired tracker for fleet and specialist equipment applications
Use cases: advanced fleet telematics, sensors, external devices, logistics and specialist integrations
Deployment note: confirm regional LTE bands, serial-interface requirements, SIM/APN, wiring and platform support
1-Wire driver identification options
The official FMC125 pinout includes a 1WIRE DATA connection, and Teltonika documents its iButton authorization list. The EC-19521 PIN keypad and GC-2673 NFC and PIN keypad both provide 1-Wire/iButton output and can be assessed for projects using this interface.
Confirm the exact tracker firmware, wiring, authorization settings and platform decoding before choosing hardware. This is an interface-based selection route, not a claim that every firmware or platform combination has been tested. Compare 1-Wire driver identification options or contact us with your tracker model and platform.
Teltonika FMC125 1-Wire documentation
Frequently Asked Questions
What is Teltonika FMC125 used for?
FMC125 is used for 4G fleet tracking projects that need professional interfaces such as RS232 and RS485.
Is FMC125 a 4G tracker?
Yes. FMC125 is a 4G LTE Cat 1 tracker. Check the regional order code and network bands before deployment.
Why choose FMC125 instead of a basic tracker?
Choose FMC125 when the project needs serial interfaces, peripheral integration or more advanced installation requirements.
What should be checked before ordering FMC125?
Check LTE bands, SIM/APN, RS232/RS485 requirements, wiring, platform support and any accessories.
Can Tracking Hardware UK quote FMC125 in volume?
Yes. We support B2B quotes for installers, TSPs, resellers and fleet operators.
How much does the Teltonika FMC125 cost?
FMC125 pricing depends on how many units you need, any RS232 or RS485 peripherals in the build and where we ship to. Volume pricing and trade accounts are available for telematics service providers, fleet operators and resellers. Tell us what your integration needs and we will send a quote within one working day. Request an FMC125 quote.
Product Documentation
Official Teltonika Wiki and downloads: https://wiki.teltonika-gps.com/view/FMC125
