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This European Standard specifies laboratory methods for testing humidity controlled exhaust air terminal devices. This European Standard applies to all controlled devices on indoor humidity, used in mechanical and natural powered residential ventilation systems. For instance, devices of the following types: humidity controlled devices with a manually adjustable opening; humidity controlled devices with fixed setting; humidity controlled devices self-adjusting on pressure difference. This European Standard describes tests intended to characterize: aero and hygro-dynamic performance; acoustic characteristics (including noise production of the device; insertion loss of the device; sound insulation); time response.