PK611 parking sensor
1>With display
2>2 sensors or 4 sensors
3>Sensor eye with water-proof and anti-bump
4>within 2 meter parking sensor will detect your car
1.50 to 0.80m: Bi,Bi,Bi
0.80 to 0.40m: BiBiBi (the closer ,the faster)
0.40 to 0m: Bi.........(solid beeping )
General specification
Working voltage : 10to 15V
Working temperature: -20 to 80
Current Consumption : <100MA
Acoustic Volume: >85dB at 10 cm
Response time ; 300ms
Ultrasonic frequency: 40KHZ