Pneumatic Hesitation Relay, Provides Minimum Outside Air Damper Position, Three Port, Wall, Inline or Panel Mount, 0.022 Scfm Airflow Usage, 5/32" Barb Fittings for O.D. Plastic Tubing, 30 Psi Maximum Operating Pressure, 32-125 Degree Temperature Range, 5-95% RH Operating Humidity Range