Press the power button to activate the thermometer. The thermometer should be held during use. Temperatures should only be taken under the supervision of an adult. Body temperature can vary from 97®F to 99®F. Generally accepted “Normal” temperature is 98.6®F. You can clean the thermometer by wiping it with soap & water or 70% isopropyl alcohol. Clean the thermometer before & after use. The thermometer shuts off automatically after approximately 10 minutes when not in use.