The GM640 can be used to measure the moisture and temperature of different grains. It is applicable to allocating, Purchasing, storing and processing packaged grains. With this Tester, the moisture and temperature of the grains can be rapidly and exactly measured. • Grain moisture test. • Food temperature test. • Grain moisture. • standard setting and excessive moisture tip. • Back light control function.Celsius, Fahrenheit temperature unit conversion. • Battery hold function. • Auto power off function: 5 minutes without any operation automatic shutdown. Data hold function.