The EXTECH 407412 Hygro-Thermo-Anemometer Meter provides comprehensive measurements of air velocity, temperature, and humidity. Its dual LCD display allows for simultaneous readings, while the data hold function enables easy recording of peak values. The built-in RS-232 interface facilitates data acquisition and analysis via a PC. This instrument is widely used in HVAC system checks, environmental testing, and field service applications, ensuring accurate and reliable data for professionals.