Specifications: 1. Digital LCD showing obstacle distance 2. With 2 front sensors and 4 rear sensors 3. Alarm by Bi-Bi sound 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 Technical: 1. Rated Voltage: 12V DC 2. Operating Range: 10.5V to 16V DC 3. Rated Current: 50mA to 180mA 4. Detecting Distance: 0.3 to 2.0m 5. Ultrasonic Frequency: 40KHz 6. Display Working Temperature: -30 to +70 Centigrade