This indoor thermometer and hygrometer is made of natural cedar wood, high temperature resistance, strong and wear-, not easy to break, no smell, suitable for sauna use; Wooden Sauna Thermometer and Hygrometer Displays temperature range from 0-120 °C and humidity scale from 0-100% humidity; clear scale for easy reading The sauna thermometer hygrometer is easy to install, there is a pre-drilled hole on the back, you just find the place where you want to use the thermometer, drill a hole, and hang the thermometer Widely Applicable: The temperature humidity measurement is perfect for measuring the temperature and humidity in your sauna or house; it is also suitable for hotels, homes, schools, hospitals and greenhouses, Manufacturer: CTRLZS