NON-CONTACT & ONE SECOND INSTANT READING: Can take your forehead/body temperature instantly without physical contact; Suitable for all ages, including adults, infants, children and elders. A great choice for families, nurseries, clinics and schools. 3 MODES IN 1: Body, Surface, and Room temperature. Specially designed to take the Human Body Temperature at CENTER of Forehead from a distance of 3 to 5cm (1.2 to 2in). TRI-COLOR BACKLIGHT with FEVER ALARM: Large 3-color backlit display and fever beeping alarm indicating normal, elevated and fever temperature respectively in body mode; Mute and buzzer modes are available on alarm. CLINICAL ACCURACY: Wipe off any sweat, perspiration, or grease before the measuring for accuracy. Measurement units can be switchable between and according to preference. MEMORY RECALL and AUTO SHUT-OFF: Recalls the latest 32 temperatures and can automatically turns off to save power when there is no operation for 30 seconds. Note: this is a co-branding with another company. There is a "+"&"-" mark on the inner iron sheet at the bottom of the thermometer, please notice when installing the battery.