Teltonika FMM650 is a professional-grade GPS tracker built for advanced vehicle and machinery tracking, making it an excellent choice for commercial fleets, heavy equipment, and demanding transport tasks. It supports 4G LTE Cat M1 and NB-IoT cellular connectivity (with fallback to 2G/GSM), ensuring stable and wide-range network coverage even in areas with weak signal. The device uses a separate GNSS module with dual-band L1 + L5 support (GPS, GLONASS, Galileo, BeiDou, QZSS), which enhances location accuracy. With tracking sensitivity down to –165 dBm and position accuracy under 2.5 m (CEP), the FMM650 delivers reliable positioning even in urban canyons or remote areas. With support for external GNSS and cellular antennas, the device can be installed in a wide range of positions, which is useful for vehicles, trailers, and fixed assets. Power is supplied via 8–32 V DC (compatible with vehicle electrical systems) and includes reverse-polarity protection, making installation safe and straightforward. As such, FMM650 combines robust connectivity, high-precision navigation, and flexible installation for reliable fleet telematics.

FMM650 offers rich interfacing and data-collection capabilities beyond simple location tracking, making it suitable for complex fleet and machinery telematics. It provides multiple communication interfaces: 2 × RS232, 1 × RS485 serial ports, 2 × CAN bus lines (supporting J1939, FMS CAN and K-line/J1708 protocols), analog inputs, digital I/Os, 1-Wire, and support for external BLE sensors and devices. This enables integration with tachographs (live data or file download), temperature and humidity sensors, fuel sensors, RFID readers, and other telematics peripherals. Dual-SIM (or optional eSIM) support offers redundancy and flexibility for international use. Device configuration and firmware updates can be done via USB, Bluetooth, or remotely through FOTA Web, giving administrators flexible management options. For power outages or disconnections, the built-in backup battery ensures the tracker continues operating. FMM650 supports multiple sleep modes to conserve battery and vehicle power when idle. Combined, these features make it an extremely versatile unit — capable of tracking location, monitoring vehicle/machinery status, logging sensor data, and supporting custom telematics workflows for transport, construction, agriculture, and other industries.