Triggered by the built-in adjustable G-sensor which allows the cam to detect motion, the dash cam will automatically lock the video in the event of an emergency such as a collision. Besides, the G-sensor monitors activity from every direction around the car, including up, down, left and right, front and backward.
Models with impact detection, however, will be able to not only record footage when an impact is detected but will also store these files away in a separate folder. So they can be easily reviewed in the video folder and well protected from being overwritten by successive files. Later on, you can retrieve the crucial footage of the incident to claim the insurance or pass the file to the police.
For example, if your vehicle is hit by another vehicle while being driven, the g-sensor, of which sensitivity can be adjusted, will detect an impact and mark this footage as an event file. The event label will signify the dash cam to store this file differently.
How Does It Work?
When the Collision Detection is turned on, and no movement is detected after 5 minutes of recording (5-minute entry mechanism for short), then Collision Detection is activated with a Collision Detection icon at the bottom right corner of the screen, and the camera automatically turns off. When the dash cam is turned off, it will start to record for 1 minute after being shaken, then turn off the dash cam again.
If the dash cam continues to be hit during the collision detection recording, it will exit the collision detection mode and enter normal recording, restarting the 5-minute entry mechanism.