Model FZK8810A QY-EWQ-01 Measurement Method Non-contact type Power Supply Prompt for low battery charge DC 3V(2 AAA batteries) Measuring Range 32 C-42.5C 33~43.0C Electricity Prompt Prompt for low battery charge Measure Distance 1cm-15cm 3~5cm Fever Alarm Abnormal body temperature alarm 5 beeps in case of the temperature is higher 38C Measuring Time Measurement time:0.6 second Maximum Error ±0.2C 0.2C~0.3C Display Unit Centigrade() Display Resolution 0.1 0.2~0.3 Automatic Shutdown 15 seconds 20 seconds Operating Environment 1040, Humidity 85% Specification Size 7cm*5cm*19cm 15.5*8.77*4.4cm Transportation And Storage Environment -20 -55,Humidity 85%