Kestrel 4200 Climate Meter w/Airflow Rugged, handheld airflow meter/portable weather station for HVAC/R professionals with digital CFM display and onboard data logging and graphing Senses wind speed, temperature, humidity and pressure and displays up to 16 total measurements on large, clear LCD. Options include Bluetooth wireless data transfer Waterproof (IP-67), floats, drop-tested to military standards (MIL-STD-810G), patented Includes soft pouch, neck lanyard, 2 Energizer Ultimate Lithium AAA batteries and 5-year warranty Used in HVAC/R, construction, general contracting, mold remediation and dehumidification, home inspection and more