Advance warning device / Advance warning device

*It can be used to prevent and warn the rear vehicles and pedestrian Before open the door.
*Before open the door the Exterior mirrors turn signals will flash,and projection warning lines area about open,
warning to the rear of the car to avoid crashed into the door.
*In accordance with the parking steps ,you can start to drive smart warning devices, no additional action.
*Apparatus on the outside rearview mirror, warning range significantly, to the rear of the car is easy to find.
*When parked the car will automatically start warning device,advance about 2-3 seconds.