Ensure the perfect temperature and humidity for plants through all growing stages with the Mondi Mini Greenhouse Thermo-Hygrometer. The thermo-hygrometer measures minimum and maximum temperature and humidity and stores a history of readings. This device can be used with mini greenhouses and garden rooms, but its also convenient for non-horticultural uses. Measures temperature between 15.8 and 122°F and humidity between 25 and 98% RH. Dimensions are 5.1 x 1.1. Includes drill piece and placement sticker for easy mounting and one L1154H battery.