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 42.5 33~43.0 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 38 Measuring Time Measurement time:0.6 second Maximum Error 0.2 0.2 ~0.3 Display Unit Centigrade( ) Display Resolution 0.1 0.2 Automatic Shutdown 15 seconds 20 seconds Operating Environment 10 -40 , Humidity 85% Specification Size 7cm*5cm*19cm 15.5*8.77*4.4cm Transportation And Storage Environment -20 -55 ,Humidity 85%