Measure the strength of your next marketing campaign easily when it includes this indoor/outdoor thermometer and hygrometer! Recipients can monitor the temperature indoors or out with this weather-resistant piece. The temperature range is -50 degrees to 150 degrees Fahrenheit, while the hygrometer measures the humidity. The thermometer has two keyholes on the backside for mounting with screws (not included) and the base bottom has a drain hole for moisture run off. Your favorite gardeners are sure to love such a wonderful promotional tool!