Supershop Wireless Electronic Indoor And Outdoor Temperature Hygrometer(HTC-1) Wireless electronic indoor/outdoor thermometer with built-in hygrometer Indoor temperature range of 32 to 122 degrees F and outdoor range of -40 to 158 degrees F Measures relative humidity on 1 to 99 percent scale; easy-to-read 3-line LCD display Includes wireless remote temperature sensor with 100-foot range; max/min temperature memory