3-in-1 TotalCheck Meter Basic Package calculates dew point and specific humidity. On-screen reading recall of up to 1400 stored readings with date and time stamp. Pin mode offers 6-60% wood scale and corrects for 69 wood types in the range of 6-60% MC. MoistureCheck Meter also corrects for temperature over the range of 0°–255°F (-28 to 124°C). Reference scale of 0–100 for non-wood building materials. Scan mode gives you a 0–200 numerical reference scale. Includes meter, RHT-S1 humidity sensor, 26-ES electrode, 10 496 pins, 9V battery and carrying case.