Specification:Fahrenheit Temperature: -40~ 482Operating Temperature: 0(32) ~ 50(122)Battery : 1.5V, LR44 (not included)Accuracy specifications take the form of :(% of Reading+number of Least Significant Digits) Range AccuracyCelsius-40~ 0 (2%+20)0.1~ 99.9 (2%+10)100~ 199.9 (2%+20)200~ 250 (3%+2)Fahrenheit-40~ 32 (2%+20)32.1~ 199.9 (2%+10)200~ 482 (3%+2) This thermometer is a high- electronic thermometer with a stainless steel probe. It has several functions, two units selected to measure celcius/fahrenherit, /min memory and data retention. The device is suitable for laboratory applications, cooking food at a temperature (boiling T), as well as for monitoringFeatures: Digital instant read thermometer with probe for kitchen chef grill The power supply is supplied by 1 piece of 1.5v, LR44 or equivalent power supply. This thermometer is a high- electronic thermometer with a stainless steel probe. It has centigrade/Fahrenheit measurements, maximum/minimum memory and data retention. Portable size, easy to carry and use in daily life. It can be used in industry, laboratory, food temperature testing and monitoring, as well as cooking (such as checking the temperature of boiled food, baby milk, etc.). Measuring range: Celsius ranges from - 40to 250, Fahrenheit temperature range from -40to 482. Auto power off: if you do not press any button for about 20 minutes, the thermometer will automatically turn off. Out-of-range indication:If the measured temperature higher than 250, screen will show "H- -".If measured temperature is lower than to 40, the screen will show "L - -"