Our onboard terminal has a Mass Storage Facility ( MSF), which is usually called black box, can save as much as 10000 location point information. This means according to the different sampling time interval that is set by the center, terminal will be able to save one week to several months' relevant data. And when the black box is full, the latest sample record will take place of the oldest one.

When there is a need of the data in the black box, center send a command and the relevant terminals will report the data in accordance with the command to the center automatically.

The data record in the black box includes the date, time, location and speed; some terminals also include the brake, turn lamp, door, horn data etc. Our terminals also support the getting of the black box data through terminal ports.