Acurite 00799 Digital Outdoor Thermometer 2-pack - Multiple Uses - Fits Any Window - Compact Design - Battery Included - Use on Any Clear Surface - Refrigerator Thermometer - Freezer Thermometer Brought to you by Tweety Sue, Small, Compact, Fits any window Suction cup will attach to any clear smooth surface Multiple uses inside and outside the home, Great for RV's and rentals, Boats too! 12-month manufacturer's limited warranty Modern, Easy-to-read design, On/Off switch for seasonal use