Image:Alertronic High Powered Voice Siren.JPG
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[edit] Summary
AL-8000, Alertronic High Powered Voice Siren, Civil defense, O'Fallon, Illinois, 2006. Robert Lawton (self)
High powered voice and siren tone with 360 degree continuous coverage. Used for tornado warnings and other public emergencies.
[edit] Licensing
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This file is licensed under the Creative Commons Attribution ShareAlike 2.5 License. In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it only under a license identical to this one. Official license |
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified image.
| Camera manufacturer | Canon |
|---|---|
| Camera model | Canon EOS 20D |
| Orientation | Normal |
| Horizontal resolution | 2000 dpi |
| Vertical resolution | 2000 dpi |
| Software used | Digital Photo Professional |
| File change date and time | 09:16, 4 April 2006 |
| Y and C positioning | 1 |
| Exposure time | 1/320 sec (0.003125) |
| F-number | f/6.3 |
| Exposure Program | Shutter priority |
| ISO speed rating | 100 |
| Exif version | 2.21 |
| Date and time of data generation | 09:16, 4 April 2006 |
| Date and time of digitizing | 09:16, 4 April 2006 |
| Shutter speed | 8.3219299316406 |
| Aperture | 5.3106994628906 |
| Exposure bias | 0 |
| Flash | 16 |
| Lens focal length | 300 mm |
| Color space | sRGB |
| Focal plane X resolution | 3959.3220338983 |
| Focal plane Y resolution | 3959.3220338983 |
| Focal plane resolution unit | inches |
| Custom image processing | Normal process |
| Exposure mode | Auto exposure |
| White Balance | Auto white balance |
| Scene capture type | Standard |
