4 Sensors Car Parking Radar System with LCD Display Front Rear Distance Detection Sound Warning Buzzer Mute Volume Adjustable Features： 1、Multiple Alarm Modes: Car radars built-in Russian/English voice, beeping and mute alarm mode, long press button to switch, short press to adjust the volumes, eight levels adjustable. 2、Sound Alarm: The alarm supports multiple alarm mode switching, as the distance to the obstacle is shortened, the alarm sound will become faster and warn the driver in time. 3、Easy to Use: When the vehicle is engaged in reverse gear, the reversing radars system will automatically enter the detection working state, easy to operate without manual intervention. 4、Accurate: The detection accuracy of the sensor is 300-2500mm, and the display can accurately show the distance of obstacles and remind you to stop the car in time. 5、Easy to View: LCD digital display shows obstacle distance and direction in real time through red/yellow/blue color dot, which is clear and convenient for drivers to assess the situation. 6、Stable Quality: Dual CPU design, quick response, support probe self check function, abnormal status prompts, preventing reverse collision caused by probe damage. 7、Easy Installation: Flush mounting design with drill bit for easy drilling holes on car bumper. It is compatible with 12 V vehicle in the market. Specification： Specifications: Material: ABS Rated Voltage: 12 V Operate Voltage: 9-16V Working Current: 20-200mA Detection Distance: 300-2500mm Ultrasonics Frequency: 40KHz±1KHz Working Temperature: -30-70℃ Display Size: 7cm/2.7inch*4.8cm/1.9inch Control Box Size: 9cm/3.54inch*6cm/ 2.36inch*2.3cm/ 0.9inch Sensor Size: 24 * 24 * 19mm/ 0.9 * 0.9 * 0.7in Package Size: 17.8*12.3*5cm Package Weight: 440g Package List： 1 * Controller Host 1 * LCD Display (5m Cable Length) 4 * Probe (2.3 meter Cable Length) 1 * Power Cable (0.8m Cable Length) 1 * Drill Bit (Standard Diameter φ22mm) 2 * Stickers 1 * Instruction Manual