A vehicle-mounted Sentinel-FM tracking unit monitors real-time position data from the GPS network of satellites, and uses it to calculate location, speed and direction of the vehicle. Up to 10 inputs connected to the tracking unit are also monitored in real-time to signal when important vehicle events have occurred. These could include detecting when a vehicle has been loaded or unloaded, when a geographical border has been crossed, or when unauthorized access has occurred which could indicate that theft of the vehicle is in progress.

The tracking unit sends information about the vehicle location and the status of any triggered sensors over wireless networks to BSM's data servers. If the received information requires immediate customer intervention, customers automatically receive an alarm notification by email, pager or phone.

By logging on to the Sentinel-FM website from any web-enabled PC a customer can view the location of the vehicle on detailed digitized street-level maps, interact with the vehicle, including monitoring up to 10 input sensors, sending commands to control up to 10 different vehicle outputs and generating detailed reports on historical vehicle activity including trip and trip summary, alarm and history reports.

Using an optional Mobile Data Terminal (MDT) a customer can also have access to 2-way text messaging, driver authentication, and display of various system and vehicle-related information such as wireless signal strength, GPS status and vehicle data-bus readings.

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