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These devices are from a Group of products which were developed for a special unit of a particular Federal Agency whose requirements included having capabilities of telephonically-based harassment campaigns which could be quickly and easily implemented as a component of certain covert operations. Some of those products are now offered for non-government sales for the first time. These are unique specialized devices which have few, if any, conventional applications. These are electronic tools for those who require innovative, serious revenge/harassment capabilities, or for those who just have an interest in unusual telephone devices.