ST4500 can send some scheduled "SMS alerts" to a predefined mobile phone, also you can change configuration parameters of Suntech OBDII tracker sending text messages with commands via SMS. To hours of service control of Suntech ST4500 in real-time and their fuel consumption control or automatic vehicle dispatch, can use the online server that offer Suntech company or if change the default IP/port you can use ST4500 in an external Tracking Management Platform, always depending of your need. From the online services can manage events or create "Virtual geofences - circular/polygonal - for service routes or deliveries tasks" in ST4500 OBDII tracker, the geofences helping to control your vehicle and kwon in all moment the movements of your vehicle in the field service management. Suntech ST4500 generate "driving pattern analysis and crash reconstruction in real-time" that can help to improve the (driving behaviour) of your vehicle driver´s. With ST4500 NB / IoT GPS tracker reduce costs in technical service, only need to connect in "Plug and Play" mode the ST4500 unit to your vehicle OBDII port to start locate in real-time without need of use any wire, with ST4500 you can also use an REST API to connect existing applications.