Real Instruments Smart Sensor AR991 Digital Grain Moisture Meter Humidity Tester Wheat Rice Corn pH Testers

13 Grain Type: - Variety key allows you to choose from 13 different type of grains option. Just press the key until you reach desired grain type. 2) Lock Value: -Hold key will allow you to hold the measured value for second visual confirmation. 3) Value Adjustment: - There is a adjust key which will allow you to adjust the measurement range of your crop as per requirement. This feature will enhance the device accuracy because the humidity of the grain depends on the location too. 4) Voice key: - With this button you can choose the device either to be in mute state or in voice state. In case of voice state, the measured value will be broadcasted. 5) Auto-Shut: - The humidity meter will auto-shut in 3 min without operation.