Soil Moisture Meter The RHMG650 Has The Ability to Store/Recall 20 Pairs of Readings with Settable High and Low Alarms for RH Relative Moisture Level and Absolute Moisture Level The Backlit LCD Has 3-Digit Primary Readout 4-Digit Secondary Readout Also Featured is The Min/Max Data Hold and 30 Min Auto Power Off Functions Moisture Content 0 Percent to 99.9 Percent Temp Range (F) -20 Degrees to 167 Degrees Display LCD Number of Species of Wood 0 Data Hold Yes