With Teltonika FMB640 GPS tracker you can connect some external peripherical through RS232 / RS485 ports: Garmin navigation devices for your field service management control, RFID readers, LLS sensors or RS232/RS485 compatible devices. FMB640 of Teltonika it is also a (GPS Tracker with voice call), you can make voice calls and communicate with FMB640 GPS device through Bluetooth connectivity. Controlled the (Driver identification) and avoid the unauthorized driving in your service routes or deliveries tasks with Teltonika FMB640 GPS tracker, thanks to 1-Wire interface or used 1-Wire interface to connect temperature sensors. Thanks to the Bluetooth connectivity that has FMB640 GPS device of Teltonika, you can connect external devices or change any configuration parameter. Teltonika FMB640 GPS tracker it also has a dual SIM slot and allow to configuration change or firmware update through FOTA function. With FMB640 can be use an REST API to connect existing applications from our tracking management platform, from where you can manage some scheduled reports and control their vehicle event management or you can manage their vehicle preventative maintenance that help you to reduce company cost, in addition you can control their field service management without any requirement limit and manage their vehicle hours of service control (HoS) depending of your need or control their service routes and deliveries tasks that help you to reduce company cost, also you can manage their automatic vehicle dispatch without any requirement limit and control their manual task registration depending of your need or manage their vehicle eco driving that help you to reduce cost. From our tracking platform you can also manage their vehicle efficient driving and control their vehicle care driving without requirement limit or also manage the control of driving habits of their drivers that help you to reduce company cost, in addition you can use our mobile applications for locate their FMB640 tracker from a mobile phone and you can use without extra cost our automatic data sending service to external servers or you can manage their vehicle fuel consumption control that help you to reduce cost.