HOLD button keeps the teperature reading until it is pressed again; / button makes Celsius/Fahrenheit switchable; Power button function also with power-off feature after 10 minutes when there is no other operationsWith easy-to-read LCD display and high precision sensor, the instant reading thermometer can get accurate readout within 3-5 secondsThe 5" long food grade 304 stainless steel probe prevent you from getting hot on your meaurements, and there is hook on the handle end to let you hang it on a kitchen hookThe food thermometer is with wide temperature range of -58-572 (-50-300), accurate to 0.9, perfect for indoor outdoor cooking, grilling, BBQ, huge turkey, chicken, roast, hot milk, etcThis kitchen thermometer can record the highest and lowest temperatures during use at each power-on time. Short press the MAX/MIN button, LCD will show the max reading, and short press again, LCD will show the min reading, while short press the button the third time, the LCD will show the current reading