Timex Wall-Mountable Thermometer and Hygrometer (TX1012) Sturdy wall-mountable thermometer/hygrometer for indoor/outdoor use Plastic case with rear hanger hole is durable and weatherproof Reads temperature from -30 to 110 degrees F (accurate to within +/- 2 degrees) Reads relative humidity from 10 to 90 percent; attaches to any wall surface Large, easy-to-read dial; measures 4.12 inches in diameter; 2-year warranty