This instrument is a grain moisture meter which can measure moisture content of various grains accurately, which is applicable for procurement, storage and process of grains. It can also measure temperature of the grain. Press the "Select" button to select the grain variety. Suitable for moisture and temperature measurement of rice, barley, wheat, feed, corn, rapeseed, soybean, etc. Specification: Measuring RangeResolutionAccuracyMoisture Content5% ~ 30% 0.5% ±(1%RH +0.5) Temperature10 ~ 60? 0.1? ±2.5C(±5F) TemperatureHumidityOperating Temperature 0~40? 0~85%RH ModelGM640 Power Supply3*1.5V AAA Batteries (NOT included) Meter Size15.5*8*3.5cm / 6.10*3.15*1.38in Probe Size 41.8*3.5cm / 16.46*1.38in Weight505g/17.8oz Package list: 1 * Moisture Meter 1 * Test Probe 1 * User Manual Note: 1. Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item. 2. Please allow slight error due to manual measurement. Thanks for your understanding.