1. The normal body temperature of an adult is about 37 ° C (98.6 ° F), and above 37.6 ° C (99.68 ° F) is a fever. However each body type is different. Some people are higher or lower temperature. Under this circumstances, it is normal when the temperature is 35℃- 37.5 ℃(95 ℉-99.5℉） 2. Each measurement needs to be more than 1 minutes apart, otherwise it could cause inaccuracy. 3. Each measurement needs to be performed at the same location to get your normal body temperature. There will be difference at different locations. That means the results of each measurement will be different. Secondly, you can observe your temperature continuously. If in doubt, you could contact doctor. 4 The range of accuracy: Ear & Forehead mode: ±0.2℃ /±0.4°F; Object mode: ±0.1℃ /±0.2°F 5. Operating Conditions: 50°F to 104°F (10°C to 40°C); Measuring distance: 0.39in-1.18in (1-3cm)