Original 4 Sensors Buzzer 16.5mm Car Parking Sensor VideoReverse Backup Radar Sound Alert Indicator Probe System 12V 7 Colors Easy to install and operateDouble CPU4 Waterproofing, Anti-frost, Anti-sand Sensor systems for enhanced coverage and detectionHelp to prevent dangerous and costly collisionsHelp to provide increased safety for paengers, pedestrians and family members -who happen to be around the moving vehicleIncrease safety for pedestrians around the moving vehicleDetect small object and low walls as wellWhen you close to the Obstacle, it will display the word:" Stop"Can be connected with any TFT screen Specifications: 1. Rate Voltage: 12V2. Operating Voltage Range: 9~16V3. Rate Current: 20~200mA4. Detecting distance: 0.3 - 2.5m5. Ultrasonic Frequency: 40KHz6. Working Temperature: -40~80C7. Display Working Temperature: -40~60C Features: 1. Size of Sound Alert Indicator:4.1cm x 1.6cm2. Length of cable of Sound Alert Indicator: 6m3. Size of main control box: 8.9 x 6 x 2.2cm4. Advanced chipset for enhanced coverage and detecting5. Detect small objects and bars6. Enable you to prevent dangerous and costly collisions7. Provide increased safety for paengers, pedestrians and family members who happen to be around the moving vehicle.