Because it is a sensor wiper.
Car wipers are crucial to driving safety on rainy days. The invention of "rain-sensing automatic wipers" was precisely based on this consideration. This kind of wiper can sense the size of raindrops through the rain sensor, automatically adjust the wiper operating speed, and provide the driver with a good field of vision, thereby greatly improving the convenience and safety of driving on rainy days.
The development process of a seemingly uncomplicated rain-sensing automatic wiper system has also gone through ups and downs. Since General Motors (GM) first used the rain-sensing automatic wiper system in the 1951 concept car LeSabre, there have been hundreds of patented technologies and countless unremitting attempts to continuously improve the rain-sensing automatic wiper system. The wiper system enables it to detect rain more effectively and respond more accurately.