Grain moisture content measurement: Confirm that the meter can display the grain moisture content, press the button to select the type of grain to be measured (type is indicated by display 1, 2, 3, 4, 1 is wheat, 2 is rice, 3 is rice, 4 is corn), insert the probe into the grain to be tested, measure the moisture of the grain, and the meter displays the moisture content of the grain to be tested. During the measurement, press the key, the screen displays "MAX", and the meter enters the maximum hold mode. mode, press the button again to exit the mode. In the maximum hold mode, the display will be updated only when the measured value is greater than the current display value, otherwise it will not be updated. The side key is the read hold button. First press to select read hold function (symbol on display), press again to cancel the function (no symbol on display) Shipping Quantity: 1 Piece Product color: black Product size: 41.1cm/140*70*35mm