5 Inch (130mm) stainless steel probe with 2 Inch (54mm) dial ON/OFF switch saves battery life Auto power off after 1 hour Temperature: -58 to 302"F (-50 to 150"C) "2"F/1"C accuracy, 0.1"/1" resolution Specifications Auto OFF After 1 hour of operation Sensor Length 130mm (5.1in) Sensor Material Stainless Steel Battery 1.5V LR44 (5000 hour battery life approx.) Display 3?1/2 digit LCD with unit of measureindication Resolution 0.1"C/F from "19.9 to 199.9"F (?20 to 150"C) Accuracy 20 F (1"C) from "14 to 212"F (?50 to 100"C) Operating temperature 0 to 40"C (?14 to 122"F) Measurement Range 58 to 302"F (?50 to 150"C) Items Included 1.5V button battery plastic protectivesheath with pocket clip for model 392050