You can receive an emergency alert from the Teltonika TMT250 GPS tracker on your mobile phone, when pressing the "Panic button" of tracker. TMT250 of Teltonika it is also a GPS Tracker with voice call, the emergency calls are active to press the "Panic button" and you receive the call in a predefined phone. The best solution to locate your field service management and manage hours of service control of the Teltonika TMT250 GPS tracker in real-time is through a Tracking Management Platform always online, also accept and send SMS messages (data/text) or can be use an REST API to connect existing applications. TMT250 GPS device of Teltonika help to reduce costs in technical services, thanks to OTA (Over the Air) function, that allow upgrade firmware in TMT250 GPS device of Teltonika remotely. In addition, Teltonika TMT250 Standalone GPS tracker it is also compatible with Bluetooth and allow change configuration via Bluetooth or connect a headset.