Specifications: 1. Digital LCD showing obstacle distance 2. 2& 4 sensors for rear bumper, if it is 6 & 8 sensor, there are 2 or 4 sensor for front bumper and the 4 sensor for rear bumper. 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 Technical: 1. Rated Voltage: 12V DC 2. Operating Range: 10.5Ví½ 16V DC 3. Rated Current: 50mAí½ 180mA 4. Detecting Distance: 0.3í½ 2.0m Packing Details: 1)Carton Size: 460mmX310mmX510mm 2) Quantity: 20 PCS/ CTN 3) G.W.: 14 KG 4) N.W.: 13 KG