Tight mirror to see blind spot

摘要

In this high-level case, when the lane is changed, in all kinds of situations, if you want to see the quadrangle zone, no matter how you operate it once in the direction, there will be a certain power supply, turn the lens connected with him, and let him turn to the background to the quadrangle zone (after returning, the original state (operation of radio station)) In addition, this special backstage or driving, safe operation, make it easy to use.