Extech 45170 Four in One Environmental Meter (Hygro-Thermo-Anemometer-Light)

Brand: ExtechFeatures: Pocket size rugged 4-in-1 meter for humidity, temperature, air, velocity and light Ergonomic pocket size housing with large dual LCD simultaneous display of temperature and air velocity or relative humidity Characters on display reverse direction depending on Hygro-Thermo-Anemometer or light mode Data hold to freeze the displayed value Records Min/Max readings Details: Amazon.com The pocket-sized, four-in-one Extech 45170 hygro-thermo-anemometer-light meter displays temperature and gives you a choice between showing relative humidity or air velocity. Temperature air or surface measurements can be made using the built-in Type K input (thermocouple probe sold separately). Additionally, the 45170 includes a light sensor, and its display reverses when in light mode. Type K temperature input (probe sold separately, view larger). The 45170 features a built in thermistor for ambient temperature measurements and a precision thin-film capacitance humidity sensor for f