Triplett CFM150 CFM/CMM Air Flow, Velocity, and Temperature Thermo-Anemometer + RH

["4-in-1 Precision Measurement Ideal for HVAC, Cleanrooms, and More – Accurately measures air velocity (up to 5900 ft/min / 30 m/s), air flow/volume (up to 999,900 CFM/CMM), temperature (up to 140°F / 60°C), and humidity (0–100%)","Large Dual Backlit LCD Display – Easy-to-read screen with dual backlighting ensures clear visibility in low-light areas","Advanced Data Tracking Functions – Min/Max/Avg feature records highest, lowest, and average readings (up to 20) for better analysis and reporting accuracy","Convenient Data Hold & Smart Alerts – Data Hold function freezes readings for easy recording, while the auto power-off and low battery indicator ensures you're never caught off guard","Durable, User-Friendly Design – Includes a 3\" (76mm) vane with 4 ft cable, 9V battery, and backed by a 2-year warranty"]