Space Age AV32+2DCD

That is an electromechanical horn on the rear of the strobe plate.

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STI SS-2000F

STI SS-2000F

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Can’t remember where exactly I put the key for this unit. It can still open with an allen wrench, but...
ADT ADT-PS

ADT ADT-PS

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Personally, I think that the ADT logo on the head of this smoke is a bit ugly.
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