Check the listing for details. Anemometer Wind Speed Meter Air Flow Volume CFM/CMM Backlight Max 45m/s HVAC. Condition: New. Listed at 51.29 USD. ✅ Multi-Functional Measurement: Measure wind speed, airflow (CFM/CMM), and temperature in one device—perfect for HVAC optimization, duct testing, or outdoor activities. ✅ Smart Data Management: Store 600 readings (manual or auto-sampling) and recall data anytime. Use HOLD/REC/READ keys for seamless workflow. ✅ User-Friendly Design: Backlight & Large LCD: Read data clearly in dim environments. Auto-Off & Low-Battery Alert: Save power and avoid leaks. Ergonomic Handle: Extendable vane for hard-to-reach ducts. ✅ Advanced Calculations: 2/3V Max & Average Flow: Ideal for HVAC efficiency analysis. Unit Conversion: Switch between m/s, CFM, °C/°F instantly. ✅ Professional Accuracy: ±3% error margin for wind speed, ±1°C for temperature—trusted by engineers and technicians.