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al Qaida watch timer

  • Original caption: "
    <larger>Al Qa'ida Casio Watch Timer</larger>

    Timers built using a Casio watch were first seen in early 2000. The device detects the watch alarm output to trigger the device. Several varieties of alarm detector circuitry have been seen (Sheets 03340 & 84071) with this being the simplest. Time delays up to 23:59 can be achieved.
    *Time Delay: User programmable up to 23 hours, 59 minutes in one minute increments.
    *Power Source: Standard 9-Volt batteries, connected through a slide switch on the side of the case, is used to power the detector circuit and detonator. The watch operates on its internal battery.
    *Anti-Tamper Features: None
    *Watch Type: This device used a Casio F-91W, but other digital alarm watches could be utilized.
    *Size: The plastic case containing the battery and detector components measures 57 mm square x 16 mm thick (2.25" square x 0.63" thick).

"
Date Unknown date
Source https://www.scribd.com/doc/12858174/IED-Trigger-Recognition-Guide
Author Unknown authorUnknown author
Permission
(Reusing this file)
Public domain
This image is a work of a U.S. military or Department of Defense employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.

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Date/TimeThumbnailDimensionsUserComment
current14:20, 1 April 2013Thumbnail for version as of 14:20, 1 April 2013502 × 1,011 (306 KB)Geo Swan{{Information |Description=al Qaida watch timer *{{Original caption|<larger>'''Al Qa'ida Casio Watch Timer'''</larger> <p>Timers built using a Casio watch were first seen in early 2000. The device detects the watch alarm output to trigger the device....
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