definition
strict definition
automatic window openers
Installed mechanisms which ease control of windows by opening them automatically.
Automatic window openers are devices or mechanisms installed on the openable windows or skylights of a building, allowing them to be opened and closed either at programmed times without human intervention, or at will by the touch of a button or other control.
The mechanism operates a window or skylight, either according to a program or in response to a control. A user-operated button is included, so the device need not always act without human input.
Openable windows can admit outside air by being moved from their closed position. Automatic window openers add the operating mechanism; the ability to move a window by hand alone does not establish this feature.
automatic window openers Photos
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