4-in-1 Environmental Meter

Pocket-size rugged 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|Built-in low friction vane wheel improves accuracy of air velocity in ft/min, MPH, m/s, km/h, and Knots|Built-in precision thin-film capacitance humidity sensor for fast response|Built in thermistor for ambient temperature measurements|High temperature measurements using Type K thermocouple|Utilizes precision photo diode and color correction filter|Cosine and color corrected light measurements|Auto power off, Low Battery and overrange indication|Complete with built-in Humidity sensor, Light sensor and Vane wheel, wrist strap, and 9V battery