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
• 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