4/6/8 Sensors Buzzer 22mm Car Parking Sensor Kit Reverse Backup Radar Sound Alert Indicator Probe System 12V 7 Colors Note: 1. If you are from Ruian Federation, please leave a full name as the receiver name. Otherwise, you may not receive your items because of the regulation of your customs. 2. If you are from Saudi Arabia, please send the copy of your ID card. According to rule of Saudi Arabia, ID card is a must to do customs clearance. 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.Provide increased safety for paengers, pedestrians and family members who happen to be around the moving vehicle.2. Sensors number: 4/6/8 sensors for your option3. Advanced chipset for enhanced coverage and detecting4. Detect small objects and bars5. Enable you to prevent dangerous and costly collisionsWorking Principle:8/6 sensors :When you are braking, The front sensors"EFGH"will show on the screen automatically, when you are reversing, the back sensors "ABCD" will show on the screen automatically4 sensors:When you are reversing, the back sensors will show on the screen automatically 4 Sensors Control Box 6/8 Sensors Control Box