Colorful LCD Parking Sensor with 2,4,6,8 Sensors Available 
Model No.: CT318-4
 
  
Features and Functions

Digital LCD showing obstacle distance
Alarm by Bi-Bi sound
Voice enable/disable
High or low voice adjustable (new function)
Colorized LCD screen with blue background
The simulative vehicle is displayed on the colorized screen
sensors optional:
   2 rear
   4 rear
   4 rear + 2 front
   4 rear + 4 front
Up to 20 sensor colors available(Black,silver,white,grey,red,etc.)    
Easy to fit,DIY installation   

Technical Parameters

Rated Voltage: 12V DC
Operating Range: 10.5V～ 16V DC
Rated Current: 50mA～ 180mA
Detecting Distance: 0.3～ 2.0m
Ultrasonic Frequency: 40KHz
Display Working Temperature: -30 ～ +70℃