Thanks to the 1-Wire interface of Teltonika FMB640 GPS tracker you can be managing the (Driver identification) to avoid unauthorized driving or connect different temperature sensors. FMB640 of Teltonika it is also a "GPS Tracker with voice call", you can make voice calls and communicate with FMB640 device through Bluetooth connectivity. With the RS232 / RS485 ports you can connect to Teltonika FMB640 GPS tracker: Garmin navigation devices, RFID readers, external LLS sensors or others RS232 / RS485 devices. The real-time tracking of FMB640 GPS device with Can Bus of Teltonika it is usually done from a Tracking Management Platform always online, also accept (SMS commands, SMS messages) or allow to change configuration and firmware update via FOTA. Teltonika FMB640 GPS tracker is a great solution for requirements of mobile asset or vehicles fleet management.