New LED Parking Sensor System Backlight Parktronic Monitor Display Kit Backup Detector Assistant 4 Probes

Car Parking Assist System DC 12V Vehicle Reverse Backup Radar with LED Distance Display Sound Warning 4 Parking Sensors for Cars
Features:
4 sensor system, double CPU and advanced chipset for enhanced coverage and detection (0.25-2m).
With digital colored LED display (number & light).
Help to prevent dangerous and costly collisions.
Help to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle.
Detect small children and low walls as well.
The display can show the position and distance of different obstacles
Anti-freeze and rain proof.
The closer the obstacle is, the faster the alarm sound, just like a human heart beating.
Easy to install.
Sensor's Diameter: 22 mm
Specification:
Rate voltage: 12V DC
Rate operating range: 10.5V - 16V DC
Rate current: 100mA - 300mA
Detecting distance: 0.25 - 2m
Ultrasonic frequency: 40KHz
Control moudle working temperature: -30 - 80 celcius degree
Main control box size: 90* 61 * 22mm
sound: bibibi
Package including:
1 * Main Control Box
1 * LED display (switch key with sound)
4 * Parking Sensors with 2.5m Line
1 * Hole Saw
1 * Power Cable
2 * Double Side Sticker
1* User manual