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
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