Through the (RS232 / RS485) interfaces you can connect different external devices to Teltonika FMM125 NB / IoT GPS tracker and increase the performance of your daily Fleet management. With the (1-Wire) interface that offer FMM125 of Teltonika you can monitoring vehicle temperature or manage the "Driver identification" in their automatic vehicle dispatch through RFID readers or iButtons tags. Teltonika FMM125 NB / IoT GPS tracker dispose of the follow events that you can setup depending of your need: (Green driving, overspeed detection for care driving, jamming detection, GNSS fuel control counter, digital output control via call, excessive idling detection, immobilizer, iButton read notification, unplug detection, towing detection, crash detection, service routes detection), also FMM125 allow to use an REST API to connect existing applications. Another great feature of FMM125 GPS tracker of Teltonika for safety increase and hours of service control in your Fleet management, are the different (Virtual geofences) for field service management control that you can create in the device configuration. For real-time locate the Teltonika FMM125 NB / IoT GPS tracker that you have installed in your vehicle, the best option is through a Tracking Management Platform always online or you can also locate FMM125 sending text messages via SMS from a mobile phone, the SMS option always is more expensive for your Fleet management.