This non-contact thermometer is very easy to use. It is always ready - just point and press the button. You will find out the temperature of the measured person within 1 second. The display is backlit according to the measured value. If it is green, everything is fine. Orange indicates an elevated temperature and red stands for a fever. In the event of a fever, you can also optionally set an audible alert.The thermometer has a memory for the last 32 measurements,which you can browse as you wish. The measurement accuracy is then +/- 0.2 ° C in the range of values 34-42 ° C. Of course, the thermometer can be switched to Fahrenheit.