... distance: 0.3-2msensor theory: ultrasonic sensoralarm distance: 0.3-2.5msensor ... voice: >80dB at 10 cm.Ultrasonic frequency: 40KHz. 4.Packing of products ... parking sensor,VFD parking sensor,led parking sensor,wireless parking sensor,car reversing radar system,parking sensor probe,sound parking sensor,rear parking sensor Number of Employees:51 - 100 People Buzzer Auto Parking Sensor System - 4 Sensor ...