Hygrometer with easy-to-read digital display for tabletop or wall mount. Measures temperatures between -50 deg (degrees) F (Fahrenheit) and 106 deg F. Measures relative humidity between 20% and 90%. 1 AAA battery included. 2.5" W x 4.25" H x 0.66" D. Made of polystyrene. UL (Underwriter's Laboratories) listed. WARNING: This product can expose you to chemicals including benzne which is known to the State of California to cuase cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov -