... sizes; 0.3, 0.5, 1.0, 3.0 and 5.0 um in cf or m3 Built-in flow sensor (0.1 CFM ... Velocity range: 0 to 197 fpm (0 to 1.0m/s) Temperature Range: 32.0 to 122.0F (0.0 to 50.0C ... ) R/H Range: 3.0 to 98.0%RHSpecifications ... OptionsIsokinetic Probe, Air Velocity Probe, Thermal Printer,Temperature/Relative Humidity Probe, Carrying Case Laser Particle Counter