Compact Hygro-Thermo-Anemometer with UV Light Sensor The EN150 is a compact Hygro-Thermo-Anemometer with UV Light Sensor. 11-in-1 Environmental Meter for indoor and outdoor conditions. Built in UV sensor measures UV light level, natural sunlight measurements. Built-in sensors also measure Air Velocity, Air Flow, Temperature, Humidity, Wet Bulb, Dew Point, Heat Index, Wind Chill, Barometric Pressure and Altitude. Complete with built-in multiparameter sensors, wrist strap, and CR2032 battery.