The FLIR EM54 HVAC/Environmental Meter with Air Velocity, Air Flow, Temperature, and Humidity Measurements is ideal for inspecting and troubleshooting HVAC/R ducting systems within residential, commercial, and industrial facilities. This meter can help you verify that duct inlets and outlets have the specified volumetric flow - a prerequisite to an efficient functional system. Featuring humidity, wet bulb, and dew point functions, the EM54 can measure deviations from proper relative humidity levels. Plus, the included Type-K contact temperature probe is useful to check electric motors and thermal equipment components for proper operating temperatures.