The Hanna Instruments HI98509-1 Checktemp 1C Pocket Thermometer is used for monitoring temperature in liquids, gases, and semisolids. The thermometer measures temperature from -50 to 150 degrees C, with an accuracy of + or -0.3 degrees C from -20 to 90 C and + or - 0.5 degrees C outside this range. The 160mm/6.3 stainless steel probe with penetration tip is connected to the thermometer by a 1m/3.3 ft. cable and is resistant to most laboratory chemicals. The thermometer has a Cal Check calibration function that performs a calibration check at the push of a button for increased accuracy of measurements. The HI98509-1 is used to measure temperature in restaurants, food storage facilities, and food preparation areas.SpecificationsPower source(1) AAA batteryTemperature range-50 to 150 degrees CTemperature accuracy+ or - 0.3 degrees C from -20 to 90 C, + or - 0.5 degrees C outside this rangeTemperature resolution0.1 degree CProbe length160mm/6.3 Weight80g/2.8oz.Dimensions (H x W x D)106 x 58 x 19mm/4.2 x 2.3 x 0.7 inchesH is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.Digital thermometers are instruments used to measure the temperature of air, liquids, or surfaces electronically. They may measure temperature in Celsius, Fahrenheit, or both. Most digital thermometers use thermistors, which are small electronic resistors. Thermistors are made out of metals that conduct electricity within a certain range and become more conductive the warmer they get. A microcontroller inside the thermometer measures this electrical conductivity and converts it to a temperature, which is displayed on an LCD. Digital thermometers are used in a wide range of applications, including in laboratory settings, food service and storage, and in doctors' offices and hospitals.Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) 9001 standards.What’s in the Box?Hanna Instruments HI98509-1 Stainless steel penetration probe(1) AAA batteryInstructions Digital thermometer for monitoring temperature in semi-frozen and semisolid food and liquids in the food service industry Measures temperature from -50 to 150 degrees C, with an accuracy of + or - 0.3 degrees C 160mm/6.3 stainless steel penetration probe is resistant to most laboratory chemicals Probe is connected to the base by a 1m/3.3 ft. cable Automatic internal calibration for increased accuracy Color White Model HI98509-1 Brand Name Hanna Instruments Model Name HI98509-1 Style Name Probe Unit Count 1.0 Count Item Length 4.3 Inches Part Number HI98509-1 Reusability Reusable Display Type LCD Manufacturer Hanna Instruments Power Source Battery Powered Outer Material Stainless Steel Immersion Depth 3.3 Feet Specification Met ISO 9001 Additional Features CAL Check - Automatically verifies calibration at startup., IP 65 water resistant protection., Large display with wide environmental temperature range and viewing angle., Not intended for human use., Silicone probe cable - 3.3 silicone cable maintains flexibility and performance. Included Components Digital Thermometer with Stainless Steel Probe Indoor Outdoor Usage Indoor Age Range Description Adult Connectivity Technology Wired Upper Temperature Range 150 Degrees Celsius Product Care Instructions Wipe Clean