Falcon Vintage Heat Detector Fire Alarm

Got this vintage Falcon fire alarm heat detector. It's that classic brass/gold tone with the little orange heat sensor in the middle. Definitely has some age to it and a bit of patina on the metal, but it's a cool piece of old school safety tech. Not sure if it still works so selling as-is, but would look great in a collection or as a prop. It's the non-electric kind that used to be pretty common back in the day.