Detailed Product Description Digital In/outdoor Thermometer and Indoor hygrometer (Comfort Zone Indicator, / selection, Max/Min ... case & buttons, LCD display, Japanese sensor, Taiwanese IC, PC lens, outdoor wire cable, AAA battery x 3pcs.Measurement Range: Indoor: 0 ... to 50 / -32 to 122; Outdoor: -50 to 70 / -58 to 158 Hygrometer: 20-99% RHProducts ...