Original 4 Sensors Buzzer 16.5mm Car Parking Sensor VideoReverse Backup Radar Sound Alert Indicator Probe System 12V 7 Colors Easy to install and operate Double CPU 4 Waterproofing, Anti-frost, Anti-sand Sensor systems for enhanced coverage and detection 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 Increase safety for pedestrians around the moving vehicle Detect small object and low walls as well When you close to the Obstacle, it will display the word:"Stop Can be connected with any TFT screen Specifications: 1. Rate Voltage: 12V 2. Operating Voltage Range: 9~16V 3. Rate Current: 20~200mA 4. Detecting distance: 0.3 - 2.5m 5. Ultrasonic Frequency: 40KHz 6. Working Temperature: -40~80C 7. Display Working Temperature: -40~60C Features: 1. Size of Sound Alert Indicator:4.1cm x 1.6cm 2. Length of cable of Sound Alert Indicator: 6m 3. Size of main control box: 8.9 x 6 x 2.2cm 4. Advanced chipset for enhanced coverage and detecting 5. Detect small objects and bars 6. Enable you to prevent dangerous and costly collisions 7. Provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle.