General recorders will have such a drip alarm sound. When the vehicle receives a collision or a strong bump, the recorder will think it is dangerous and will lock the image at that time to leave a certificate. It is suggested to reduce the collision sensitivity.
Driving recorder is an instrument to record the images and sounds of vehicles during driving. After installing the driving recorder, it can record the video images and sounds of the whole driving process of the car and provide evidence for traffic accidents. People who like to go to road trip can also use it to record the process of conquering difficulties and obstacles. Recording the time, speed and position in the video while driving is equivalent to a "black box".