They are custom-made sirens comprised of a solar panel, which charges the batteries, battery/control box, and an Atlas weatherproof speaker. Refer to the "Mystery Sirens topic"...and are tested weekly on Wednesdays around 11-11:15 AM, according to an article published right after they were installed in July 2011. They are not tested in the winter.
We already have them mapped from our new Cuyahoga County map, but I couldn’t find that 7th location, so thanks for finding it!Brendan W wrote:Here is a map I made of the siren locations:
https://drive.google.com/open?id=1SaIpZ ... sp=sharing
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