DescriptionThis instrument is a portable 3½ digit, compact - sized Digital Thermometer designed to use external K-type thermocouple as temperature sensor. Temperature indication follows National Bureau of Standards and IEC 584 temperature / voltage tables for K - type thermocouple. RTD Thermometer is mainly using for monitoring high-precision temperature and measuring scopes. The thermometer can display changes among the three units : kelvin, fahrenheit and centigrade, and it also has memory, reading the max and min values function