Important Note:
-Please remove probes from soil and wipe clean after each use.
-Dont measure liquids especially water, it is only used to test the soil moisture or PH.
-Choose a soft soil, forbid to force the metal probe into the hard soil. Please dont put the probe pen for a long time in the soil (no more than one hour), otherwise it will damage the pen.
-Dont use the measuring pen near the magnetic material and away from other metal objects.