Air Flow Capture Hood Hoods Included 2 ft x 2 ft 25 to 2500 CFM Range Accuracy +/-3 Percent of Reading Differential Pressure Range +/-15 in WC Temp Range 40 to 140 Degrees F Base Dia 18 in Height 42 in Digital Multi Line LCD Display Bluetooth Compatible Yes Minimum 10 Hours Battery Life Battery Type AA NiMH Includes 2 Static Pressure Probes 2 x 2 Hood and Software Base Battery Charger Case Meter NIST Traceable Calibration Certification Pitot Probe Tubing