Motion detection on a dash cam is typically activated through the G sensor, which detects changes in acceleration. When the sensor identifies these changes, it triggers the dash cam to start recording. To ensure that critical events are captured in their entirety, many dash cams also feature "incident lock" or "emergency recording," which marks the triggered video segment as important and protects it from being overwritten during loop recording. This ensures that footage of significant events is safely stored and available for later review.

While motion detection can be used both while driving and in parking mode, it serves slightly different purposes in each scenario:

1. Motion Detection While Driving: This feature captures events or incidents that occur while you are driving, such as sudden braking or a collision. It's designed to ensure that any unexpected situations on the road are recorded.
2. Parking Mode: This is a specific mode designed to monitor the vehicle while it's parked and the engine is turned off. Parking mode can use various methods for monitoring, including motion detection.

- 24-Hour Monitoring: This method involves continuous recording of the surroundings, even when the vehicle is parked. The dash cam remains active, providing around-the-clock surveillance.

- Motion Detection in Parking Mode: When motion is detected near the vehicle, the dash cam starts recording. This method conserves storage space by only recording when there is activity around the vehicle, such as someone approaching or an impact occurring.

This dash cam model offers parking surveillance, time-lapse photography, and motion detection for different parking security scenarios. The following functions can be enabled individually or simultaneously to enhance surveillance of the car when it detects that the vehicle is off:

1. Collision detection: When the vehicle engine is switched off, the dash cam is in standby mode and video recording will be paused. However, when the built-in G-sensor detects an abnormal vibration of the car (which usually happens when the car is involved in a collision), it triggers the recording of a 30-second parking surveillance video and stores it in the parking surveillance video folder of the device album.
2. Motion Detection: After the engine is turned off, the dash cam goes into standby mode, without recording. In the event that the ongoing image algorithm of the dash cam detects a potentially dangerous scenario and determines that the level of threat has reached the recording threshold, the dash cam records a 30-second video of parking surveillance. The video is then stored in the parking surveillance video folder in the device's album.
3. Time-lapse photography: After enabling the time-lapse photography function, the dash cam continues to capture footage at a sampling rate of one frame per second (when 30 fps frame rate is selected) or one frame every 500 milliseconds (when 60 fps frame rate is selected) after the vehicle is shut down. It then synthesizes them into a 30 fps or 60 fps video file, i.e. time-lapse video and stores them in the time-lapse video folder in the device's photo album. Time-lapse photography allows for continuous recording of the dash cam's field of view and the recorded images can be replayed 30 times faster than real time. In the case of an accident or unusual event, it can better record the entire process, making effective evidence.

Note: Parking surveillance events triggered by collision detection or motion detection can be immediately delivered to your mobile phone through alerts and messages if you install the 4G Hardwire Kit. This will remind you promptly of any abnormal conditions your vehicle may be experiencing.

This occurs when the parking surveillance cable cannot be detected by the dash cam. During such situations, please perform the following checks:

1. Check whether the parking surveillance cable of the dash cam has been installed and connected correctly. If you have no experience or knowledge about installation, hands-on ability, it is recommended that you visit an automotive repair and maintenance store for professional installation services. For niche models, you are recommended to first contact the 4S dealership store to obtain the vehicle fuse box circuit definition information for installation reference.
2. Check whether the parking surveillance cable, the fuse box, and the dash cam host are connected properly.

Motion detection on a dash cam is an essential feature that helps capture important moments by triggering recording when the G sensor detects changes in acceleration. While you can choose to disable motion detection, keeping it enabled ensures that significant events are recorded and preserved. With customizable settings, like those offered by 70mai Dash Cam Omni, you can tailor motion detection to your specific needs, providing an extra layer of security for your driving and parking experiences.