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

Features:
4 sensors system for rear protection.
4-stage audible alert buzzer.
Perfect performance in all weather conditions.
Does not interfere with the vehicle's electronic system.
Easy installation.
Quality guaranteed.

Specifications:
Input Voltage: 9-16V DC
Beep SPL: 70-90dB
Sensor Installation Height: 45cm-60cm
Input: 4W (Max)
Detection Range: 0.1-1.5m / 0.3-5.0ft
Package Size: 16.5 * 16.5 * 9.5cm / 6.5 * 6.5 * 3.7in
Package Weight: 506g / 1.1lb

Package List:
1 * ECU
1 * Buzzer Speaker
4 * Sensor
1 * Set Installation Accessory
1 * English User Manual