Don"t let the fear of black ice keep you from getting to your destination on time. This dependable electric thermometer lets you know the temperature inside your vehicle and outside with the added security of a warning system that alerts you when conditions reach freezing. Also features a built in clock so you"ll know when you are going to arrive safely. Another great innovation from RoadPro, your trusted travel companion, bringing the comforts of home to on-the-go living.