Teltonika FMB125 — Professional 2G Tracker with RS232 and RS485

The Teltonika FMB125 is a professional GNSS/GSM/Bluetooth tracker with external GNSS antenna support, internal GSM antenna, RS232, RS485 interfaces and internal battery.

It is suited to more demanding fleet integrations where serial interfaces, external positioning antenna options and peripheral connectivity are required.

Tracking Hardware UK supplies FMB125 for B2B projects and can help compare it with current FMC/FMM alternatives when 4G or LTE-M is preferred.

Key Specifications and Deployment Notes

• Connectivity: 2G GSM/GPRS with GNSS positioning and Bluetooth

• Antennas: external GNSS antenna and internal GSM antenna design

• Interfaces: RS232 and RS485 for professional integrations

• Power: internal backup battery for event continuity

• Use cases: advanced fleet telematics, external equipment, sensors, peripherals and platform integrations

• Deployment note: confirm 2G network support, serial-interface requirements, antenna placement and platform compatibility before rollout

Frequently Asked Questions

What is Teltonika FMB125 used for?

FMB125 is used for professional 2G fleet tracking projects that need RS232/RS485 interfaces and flexible integration options.

Is FMB125 a 4G tracker?

No. FMB125 is a 2G device. For current 4G or LTE-M deployments, compare suitable FMC or FMM alternatives.

Why choose FMB125 instead of a basic tracker?

Choose FMB125 when the project needs professional interfaces such as RS232/RS485, external GNSS antenna planning or advanced peripherals.

What should be checked before ordering FMB125?

Check 2G service, interface requirements, antenna installation, SIM/APN, platform support and accessory compatibility.

Can Tracking Hardware UK quote FMB125 in volume?

Yes. We support B2B quotes and model selection for installers, TSPs, resellers and fleet operators.

Which accessories can I connect to the FMB125?

The FMB125 has RS232 and RS485 interfaces for professional integrations, as listed in the Teltonika datasheet, plus Bluetooth for supported accessories. Accessory compatibility depends on the exact device and configuration, so send us the proposed setup and we will confirm it.

Product Documentation

Official Teltonika Wiki and downloads: https://wiki.teltonika-gps.com/view/FMB125