Name：Blue color LCD Parking Sensor Model：SN-318 Product Introducation： 1. Digital LCD showing obstacle distance 2. 4 sensors for rear available 3. Alarm by Bi-Bi sound, 3 step switch with High, Low and Off function for buzzer 4. Blue color background 5. The simulative vehicle is displayed in the colorized screen 6. Digital signs (Attention, Brake & Stop) will be displayed in the colorized screen 7. All kinds of sensor colors and styles are available 8. High quality and easy to install