About This MULTIFUNCTIONAL ENVIRONMENTAL METER: Combines air speed, temperature, humidity, light, sound levels, and thermocouple probe readings into one compact, handheld unit, perfect for environmental testing. ACCURATE SOUND MEASUREMENT: Measures sound levels from 35 to 130 dB with a 0.1 dB resolution. Ideal for noise pollution or acoustic studies. DUAL LCD DISPLAY FOR EASY READING: The large dual LCD shows air speed, temperature, humidity, light, and sound readings simultaneously with out-of-range and low battery indicators for convenience. PORTABLE AND USER-FRIENDLY: Includes touch-tone buttons, min/max function, auto power off, and a hold function for easy operation in the field. Comes with a soft carrying case for portability. VERSATILE FOR PROFESSIONAL USE: Ideal for use in environmental testing, HVAC, industrial, and research applications, with the ability to read temperature using a type-K thermocouple probe for precise temperature measurements. 5 YEAR WARRANTY: We stand behind the quality of our products and offer a 5 year manufacturer warranty.