Infrared sensor measures temperatures without contact with the skin. Health Canada Registered Class 2 Medical Device. Measuring Distance: 3cm – 5cm (1.2”– 2”). Measuring range (In body mode): 32.0°C- 42.9°C(89.6°F - 109.2°F). Automatic power-off less than 30 secs. Memory capacity of 32 readings.