environmental, noteasy to damage There is double-sided tape on the back of the thermometer, which can be pasted directly on the wall for easyinstallation Color printing, clear scale Small and, portable Physical sensing principle, no battery, easyto use Dialdisplay, easyto observe temperature and humidity changes A thermometer measures both temperature and humidity Temperature range: 60-120℉ / 16-49℃ Humidity range: 0-100, Manufacturer: JADEWaa