... Parking Sensor with AV1,AV2 Video input,camera and sound alarm AV1 for the rear-view image input 2-4pcs ... car Parking Sensor with AV1,AV2 Video input,camera and sound alarm 1. With external display2. Two-way video input ... AV1, AV2, AV1 for the rear-view image input3. AV2, VCD, monitor and ... Parking Sensor with AV1,AV2 Video input,camera and sound alarm