Car Packing Sensor 2 sensors included, Sensor color optional Packing: Color Box 10/0.063 CBM Car Packing Sensorsystem activated automatically when reverse gear is engagedfull-weather design, Un-affected by wind, Ice,Snow&RainChirping warning&LCD display2 sensors included, Sensor color optionalPacking: Color Box 10/0.063 CBM car parking sensor