Operating steps of switching from Celsius to Fahrenheit1. Turn on the machine; 2. Long press to enter the memory interface; 3. Long Press and hold for setting; 4. Save after setting is completed.Large Screen Display: electronic thermometer adopts large screen LED,LED display screen The reading is clear Visible at nightThe package does not contain batteries. Need twoAAAbatteries,Can support 600 measurements,Energy efficient,5 Seconds Automatic ShutdownBest after-sales service has a one-year warranty. If you have any questions, please contact us.Safe Measurement: electronic thermometer is better than traditional temperature measurement methods,without contact with human skin can quickly measure the temperature,to relieve the discomfort of traditional measurement.Non-toxic,non-stimulating,non-allergenic and other adverse reactions to the human body.INFRARED PROBE PRECISE MEASUREMENT:Processor intelligent analysis and processing to reduce the impact of the surrounding environment,the measurement result is very accurate, the measurement result can appear in less than 1 s,and the measurement is very simple.It can store 30 groups of values,easy to analyze and compare the measurement results.