Siemens U-MHT-S17

The more I look at this alarm, the uglier it gets.

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EST 882-2B

EST 882-2B

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This unit has an electronic horn rather than an electromechanical mechanism.
Wheelock ET-1080-WS-24

Wheelock ET-1080-WS-24

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You can’t really tell from the pictures, but the strobe is practically falling out of this particular unit.
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