LED Digital Displaying Parking Sensor

Model code: P811 (4 sensors)
Model code: P811-2 (2 sensors)
A) Sensor number: 2-4 pcs
B)Detector type: Drilling or stick-on
C)3-digital with 3 colors 7 lights display the distance
D)stage-by-stage sound alarm to avoid colliding
E)the voice could be adjusted, with mute setting available for digital LED display series(d-c4)
F)On backing the car, the rear sensors detect obstacles behind the car auto-matically
G)Versatile detection range
H)Sensor type for optional