Can anyone identify this device?

My guess is that it's one of those flashing LED widgets that you usually see as part of a larger pin (e.g.,

but it seems to be missing its LEDs!

Yup...I have one on my desk.. But a little different..

3 SMD leds in a row. The IC is more square than rectangular.

What is the same is:

2 button cells magnet clear plastic dome ..and it works.. D from BC

It's a series of resistor bolometers designed in an array meant to track heat signature movement, such as would be found in the nose of a heat seeking missile.

Just one guess. I certainly appears optical in nature.

2 LEDs and a driver (probably flashing) chip with option for a 3rd LED not fitted.

If you can't see it flashing with good batteries in then it is broken or more likely infra red.

You mentioned sticking to a car roof. If infra red it is the kind of thing spooks surreptitiously stick on the roof of a car they want to track with a plane/helicopter.

Did you find it stuck on your car ;)

It's a flashing lapel pin. I don't know why there's no picture or anything - some years ago, I got one like this but it was of an American flag, with flashing red and blue LEDs. There should have been a little metal piece with it that goes on the other side of the lapel, to hold it in place.

And, URLs use forward slashes '/', not backslashes.

Cheers! Rich

A URL slash inverter?

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Rich Grise wrote in news: snipped-for-privacy@example.net:

It comes with two magnets. One inside (as has been found), and one outside, likely missing.

Firefox corrected it.

The device is obviously a nomenclature.

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