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smoke damper

Standards
a device that operates to restrict the passage of smoke through a duct or opening for the passage of air and operates automatically on receipt of a signal from a remote device
Source - AS 1670.1:2018: Fire detection, warning, control and intercom systems - System design, installation and commissioning
Standards
a device that operates to restrict the passage of smoke through a duct or opening for the passage of air and operates automatically on receipt of a signal from a remote device
Remote devices include internal detector, fire alarm panel, fire fan control panel, manual release, etc.
Source - AS 1668.1:2015: The use of ventilation and air conditioning in buildings
HB50
movable damper in a duct or other airway passing through a fire separation which closes automatically upon the detection of smoke to prevent the transfer of smoke and hot gases produced by an outbreak of fire
See also: fire damper