Although this detector came from Temu (not a sponsor) it is widely available from many online sales platforms.

Its purpose is to help you locate concealed cameras in your home or temporary accommodation.
It does that by firing out a bright ring of red light, which you can then view centrally for retro-reflections from lenses. The use of a dichroic glass filter is unusual for something like this, and quite a nice touch.

The circuitry is very simple, since the unit relies on the skills of the user to differentiate what might be causing a reflected pinpoint of light. It's intended for use by someone knowledgeable about what they are looking for and the areas a secret camera might be covering.


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