Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer

A special stowable device was provided in the Apollo Command Module that could be connected to the spacecraft caution and warning system and mounted on either side of the spacecraft. Its purpose was to allow all three astronauts to sleep simultaneously with their headsets removed and warn them with a loud acoustic signal if, while asleep, an event occurred that required their attention.

Consisting of a power plug, a tone booster, and a photosensitive device to trigger the tone whenever the spacecraft Master Alarm lamp became illuminated, this unit was flown on the Apollo 11 Command Module during its historic mission. It was transferred to the Smithsonian in 1970.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Country of Origin United States of America Type INSTRUMENTS-Miscellaneous Dimensions 3-D (Cylinder): 12.7 × 6.3 × 6.3cm (5 × 2 1/2 × 2 1/2 in.)
3-D (Cord): 129.5 × 0.6 × 0.6cm (4 ft. 3 in. × 1/4 in. × 1/4 in.)
3-D (Square block): 9.5 × 3.8 × 5.1cm (3 3/4 × 1 1/2 × 2 in.)
 Materials Aluminum
Textile
Plastic
Copper Alloy
Synthetic
 Inventory Number A19791660000 Credit Line Transferred from the National Aeronautics and Space Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.