parking sensor for trucks and buses (SB-323B-4)

"1.Wireless CPU to display communications               2.Digital LED showing obstacle distance                           3. Alarm by Bi-Bi sound
4. LED display with three colors (Red, yellow & green)
5. Crescent shape digital display screen
6.Turn on/off the voice according to your desire
7.All kinds of sensor colors and styles are available
8. High quality and easy to install"