Radar SensorTC-1 Backup Camera with integrated Parking Distance Control (PDC), when you are Parking and there is any obstacle or pedestrian within 3 meters, the radar buzzer will emit a drip drip alarm sound, the closer the distance, the more urgent the alarm sound is, and the alarm sound will be maintained to remind you when the obstacle or pedestrian is within 0.5 meters from the car. Gives you an extra layer of safety reminder to avoid accidents when backing up. 1080P HD Backup CameraTC-1 back up camera for cars adopts 1080P full HD reversing camera with 170 degree wide angle, with 7-inch monitor display, with radar collision warning alerts, making it easier for you to spot pedestrians, cyclists and obstacles when you are backing up.