The Extech MO295-NISTL Pinless Moister Psychrometer plus Infrared Thermometer is able to monitor the moisture in wood and other building materials with virtually no surface damage. The user is also able to humidity and air temperature with the built-in probe plus the non-contact infrared temperature design. The Extech MO295-NISTL also is capable of storing up to 20 labeled readings for further analysis. With limited NIST Calibration.