1.buzzer parking sensor (BY-01D608) 2.car buzzer parking sensor ,reverse sensor , auto ... parking sensor 3.CE,ROHS certificate 1.buzzer parking sensor (BY-01D608)2.car parking sensor ,reverse sensor ,parking sensor ... auto sensor3.CE,ROHS certificatesBuzzer Parking sensor system ·Stage-by-stage sound alarm ·Sensor style and color optional.·2/4 ... distance: 0.4-1.5m buzzer parking sensor (BY-01D608)