A first image (200) of a transmitted signal is detected within a received signal containing a plurality of images of the transmitted signal. This is accomplished by detecting a second image (210) of the transmitted signal. A set of characteristics of the second image of the transmitted signal is determined, and subsequently used to detect the first image (200) of the transmitted signal.

 
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> Mobile, unitary, wall-plugged, temperature and/or power monitoring and warning system for critical spaces

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