How is a smoke detector so loud?
April 26, 2004 2:48 PM Subscribe
What is the component in a smoke detector/fire alarm that can produce such a high volume noise from a 9v battery? (more inside)
posted by i_am_joe's_spleen to Technology (8 answers total)
I am intrigued by the sheer volume a smoke alarm can put out. As a cycle commuter, I'm thinking about constructing some kind of horn, and am wondering if I could cook something up from a dismembered smoke alarm.