The GPS Multi-Function Alarm is a versatile and reliable alarm system that is perfect for truck drivers. It can track the truck's position and automatically shut off in night hours. The alarm also has a speed cut off capability, so that it automatically turns off when you are going over a certain speed and therefore don't need it anymore. With its 96 decibels of sound, the alarm is loud and clear, so you can be sure that you will be alerted to any potential danger. Finally, the alarm is also capable of producing a reversing warning, which can help to prevent accidents when backing up.