Teltonika FMM125 4G LTE | Expandable GPS Tracker

The Teltonika FMM125 is a multi‑purpose, professional‑grade GPS tracking device designed for reliable real‑time monitoring of vehicles and assets. It uses LTE Cat M1 / NB‑IoT connectivity with fallback to GSM networks, providing enhanced network coverage, lower roaming costs, and stable data transfer. 

Equipped with internal high‑gain GNSS and cellular antennas, the FMM125 offers accurate position tracking across major global satellite systems including GPS, GLONASS, Galileo, BeiDou, QZSS and AGPS. 

The tracker also includes Bluetooth® LE support, allowing connection with external BLE sensors such as temperature, humidity or other monitoring devices. Its RS232 and RS485 serial interfaces enable integration with third‑party hardware like fuel meters, RFID readers, and CAN adapters, making it suitable for advanced fleet telematics and vehicle diagnostics. 

Featuring a built‑in backup battery, dual SIM support, and flexible I/O options, the FMM125 excels in applications where continuous tracking and external sensor integration are critical, such as fleet management, logistics, vehicle rental services, public transport, and remote asset tracking. 

Key Features

LTE Cat M1 / NB‑IoT with GSM fallback for reliable connectivity and lower roaming costs 
High‑accuracy GNSS positioning across multiple satellite systems 
RS232 & RS485 serial interfaces for external devices and CAN adapter support
Bluetooth® LE support for wireless sensors
Built‑in backup battery for continued operation without external power 
Dual SIM for improved network reliability and coverage 
Compact form factor ideal for diverse applications