Built in high technology system， this device helps a lot when parking your car.

Features:
4 sensors system.
Dual-color LED display with built-in buzzer.    
Anti-false alert technology.    
Self-test function.
Intelligent detection for cars with spare tire or other protrusion.    
All weather design， works well in rain.
Alarm by Bibi sound.

Specifications:
Input Voltage: 9-16V DC
Beep SPL: 70-90dB
Display Range: 0.3m-2.5m / 1ft-8.2ft
Sensor Installation Height: 45cm-60cm
Package Size: 16.5 * 16.5 * 9.5cm / 6.5 * 6.5 * 3.7in
Package Weight: 594g / 1.3lb

Package List:
1 * ECU
1 * LED Display
4 * Sensor
1 * Set Installation Accessory
1 * English User Manual