Pen-type structure, stainless steel probe, straight measurement, easy to carry Button function Description: 1, ON / OFF: switch function 2, C / F: Celsius / Fahrenheit conversion 3, HOLD: temperature lock function, press this button, then the temperature is locked, and then press the lock function to lift. 4, MAX / MIN: high temperature and low temperature memory, press this button to display the previous high temperature, then press the previous display of low temperature, and then restore the temperature measurement state Technical data: Resolution: 0.1 Accuracy: 1 (-20 ~ +80 ) 2 (other range) Power saving mode: 10 minutes automatic shutdown power saving function Power supply: AG13 button battery 1(not including)