Dumpster find of the day!
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Awesome! Are those the devices from the first floor of that one building?
I believe so yes. It’s got to be.
Great, great! Now all you need to do is get the devices from the other floors & it’ll be mission accomplished!
Do those cheverons have the mercury knife switch?
They made chevrons with mercury switches? No way! 
Yeah! They did. The mercury switches are kinda dangerous tho
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you gotta tell old school fire alarms about this!!
The Peninsula library (north of Akron) has the same exact devices (I have a post about it under the “fire alarms in buildings” category.)
No. I took apart one and yea they don’t.