Specifications: 1. Wireless CPU to display communications, there are not any wire between the main board and the display. 2. Digital LCD showing obstacle distance 3. Alarm by Bi-Bi sound 4. Colorized LCD screen 5. Crescent shape digital display screen 6. equip the changeable color LED sensor, 7.The simulative vehicle is displayed in the colorized screen 8. All kinds of sensor colors and styles are available 9. High quality and easy to install Packing Details: Carton Size: 470mmX310mmX510mm Quantity: 20 PCS/ CTN G.W.: 17 KG Technical Parameters: Rated Voltage: 12V DC Rated Current: 50mA-180mA Detecting Distance: 0.3- 2.0m Ultrasonic Frequency: 40KHz HF Frequency: 315MHz Display Working Temperature: -30 -+70-