This product is installed in vehicle,it can monitor the driving speed,when the driver overspeed drive,the alarm will be aloud with light. It also record important driving data for accident analysis for police. This product employs the technology of data recorder ¡°Black Box¡± in aviation. The stored data can be used as an evidence of accident investigation. Also, the management can monitor the driving behavior of drivers through regular data downloading and analysis. It can improve the fleet management and prevent the violated driving behavior of drivers, as well as increase the efficient of management. Neutral packing.