Don't risk your life or limb guessing about icy road conditions! With this handy indoor/outdoor thermometer from Bell Automotive, you can always be sure and safe! A sensor attached to your vehicle's exterior measures outdoor temperatures - alerting you when conditions are favorable for dangerous road ice - and a second sensor measures the temperature inside your car, truck or SUV. The display/control unit mounts conveniently on your dash, center console or any other surface in your vehicle's interior using durable, easy to use hook-and-loop tape, and its sleek, modern design blends well with practically any interior design scheme. Time and date are also displayed on the easy to read LED screen, which is backlit for convenient nighttime viewing. Battery is included.