Old Household Wall Mount Evergard Fire Alarm Powered by Freon

Description

Very unique Evergard fire alarm. I have never seen one like it. It operates on Freon. The alarm is shaped like a house. It measures approximately 6 3/4 inches in length, 4 5/8 inches wide and 4 1/4 inches tall, not including the bulb. With the bulb it would be about 5 inches tall. I did not take the brass colored cover off but I can see what looks like a horn and a sealed can, the Freon, I would think. Not sure quite how this is supposed to work, maybe the glass bulb on top breaks or senses smoke and sets it off, I don't know. I bought this at an estate auction and don't know if it will work or not. Seems to be a simple setup. I see no obvious reason that it should not work. Sold as is.