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Dashcam Motion Sensor Recording: How Parking Detection Works

Motion detection watches for visual change; impact detection reacts to movement of the vehicle. The best parking setup may use either or both, depending on where you park.

A dashcam motion sensor is intended to identify activity in the camera's view while parking mode is active. A motion sensor dash cam may then start a clip, preserve buffered footage or mark an event, depending on the model. It needs a clear view and an approved constant power arrangement.

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Common questions

Questions before you buy

How does a dash cam motion sensor work?

The camera analyses change within the image during parking mode and uses that change as a recording trigger. The precise algorithm and clip handling are model-specific.

Is motion detection the same as impact detection?

No. Motion detection reacts to visual activity; impact detection generally uses an accelerometer to sense movement of the vehicle.

Does motion detection work without hardwiring?

Parking operation needs constant power. That may come from a supported hardwire kit, compatible OBD accessory, always-on outlet or dedicated battery system.

Why does my motion sensor car camera record too many clips?

Traffic, pedestrians, shadows, weather or a sensitive setting can create frequent triggers. Adjust supported settings and reconsider where the vehicle is parked.

Does buffered parking recording capture what happened before movement?

On cameras that support it, a buffer can include moments before the trigger. Confirm the buffer behaviour and duration in the product manual.