The QXNY car reversing radar system is composed of 4 ultrasonic sensors, a digital control box and an LCD display, making it easier to park any vehicle. It automatically detects the distance between the car and the obstacle behind it through a sensor installed on the rear bumper of the car. It helps avoid dangerous and costly collisions that can easily happen behind the steering wheel Features: 1:With the button you can switch between three alarm sounds, voice, beep or mute. 2: There are 4 light bars, which represent the data of each sensor respectively, so that the driver can know the position of the obstacle. 3: The sensor is double-angled and 22MM diameter, which can effectively prevent invalid alarms and facilitate more accurate detection. 4: Blue background light makes viewing data more comfortable and does not affect the drivers sight. 5: The controller box adopts a flip type to ensure that each wire is in firm contact. 6:Automatically start detection when reversing, detection range: 0.3M~2.3M. 7: On the display, there is a number which represents the distance to the nearest obstacle. The controller box adopts a flip type to ensure that each wire is in firm contact. With a voice switch button, you can switch the real voice, beep or mute. Product List 1 LCD monitor X1 2 main boxX1 3 Sensor X4 4 stickers X1 5 hole drill X1 6 User Manual X1 7 power cord X1 Specifications:Front sensor detection range: 0.3M~1.2Mbr Rated Voltage: 12V DC Rated Current: 100mA - 300mA Ultrasonic Frequency: 40KHz Operating temperature of control module: -30 - 80 degrees Celsius Display operating temperature: -20 - 70 degrees Celsius Sensor Diameter: 22mm Alarm sound: human voice, beep or mute Digital LCD display (numbers and lights). Helps provide increased safety for passengers, pedestrians and family members who happen to be around moving vehicles