Measures Air Velocity, Air Flow and Temperature - Temperature Range: 14-140-Degree F - Weight: 1.6-Pound Including Battery and amp; Probe Air Velocity Units: M/sec, Km/H, Ft/Min, MPH, Knots - Display: Dual Function 4-Digit LCD - Sensor Head: 2.75 Diameter Air Velocity Accuracy: /- 3-Percent - Sampling Rate: 1 Reading Per Second - Auto Power Off After 20 Minutes Sensors: Conventional Angled Vane Arms with Low-Friction Ball Bearing, NTC-Type Thermistor - Main Instrument Dimensions: 7.0 x 2.9 x 1.2 Temperature Units: -DegreeC/-DegreeF - Battery: 9V Battery- Air Flow Units: CMM (Cubic Meters/Min), CFM (Cubic-Feet/Min) - The PMA90 is a digital anemometer and thermometer from Pyle. This meter uses conventional angled vane arms with low-friction ball bearings and an NTC-type thermistor for accurate, speedy readings (1/sec). It measures air velocity, air flow, and temperature. Measures velocity in M/sec, Km/H, Ft/Min, MPH, and Knots. Measures air flow in CMM and CFM. The PMA90 automatically powers off after 20 minutes to save power. 9V battery required.
I read the other reviews where people said they used this for testing their home HVAC systems and tried this as a result. My only concern with a meter like this is that my low-flow HVAC system would not have enough flow to spin it, but this unit worked perfectly.WOULD I BUY THIS AGAIN?> Yes. It's a nice unit.PROS:> Works with very low speeds, easily down to 1mph, and worked well with my HVAC system.> Fan is attached to a nice length cable, and is perf..