... 3 Waterproof Parking Sensor, LED Parking Sensor,Car Parking Sensor System:7 bands 3 colors ... bracket.Detachable display and cableFit any make of car or vehicle, van, caravan, trailer etc. ... mDangerous0.2-0.50mBiBiBiredTechnical Specification:1)Car Entry Level Rear 4 Parking Sensor System2) Sensor detection range ... .7)Ultrasonic Frequency:40KHz8) 3 color LED 4 channel w/ digital readout,Built-in buzzer9) ...