What's in the box:

Car Parking Radar System (Standard)

Car Parking Reverse Backup Radar Sound Alert + 4 Sensors

Features:
4 sensor system, double CPU and advanced chipset for enhanced coverage and detection (0-2.5m).
High sensitivity.
With sound alert when the 4 cameras detect dangers.
The closer the obstacles, the louder and faster the sound alert.
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.
Anti-freeze and rain proof.
Easy to install.
A saw drill head included.

Specifications:
Sensor color: Silver
Rate voltage: 12V DC
Rate operating range: 10.5V - 16V DC
Rate current: 100mA - 300mA
Detecting distance: 0.3 - 2.0m
Ultrasonic frequency: 40KHz
Control moudle working temperature: -30 - 80 celcius degree
Display working temperature: -20 - 70 celcius degree
Indicator size: 44x17mm (D x H)
Sensor size: 19x25 (H x D)
Main control box size: 90x60x23mm
Main control box weight: 63g

Item Includes:
1 * Main Control Box
1 * Sound Alert Indicator
4 * Parking Sensors with 2.5M Line
1 * Hole Saw
1 * Power Cable
2 * Double Side Sticker
1 * User Manual