Hacked Gadgets Forum

January 11, 2008

Fire Alarm Bell Alarm Clock – Worlds loudest alarm clock?

at 5:12 pm. Filed under Computer Hacks, Crazy Hacks, DIY Hacks, Electronic Hacks, Funny Hacks, Insane Equipment, What Were They Thinking

Take apart the Bell

The fire alarm bell used is a typical modern motor bell. These devices simply spin a cam on a motor. The cam lifts and releases a spring loaded hammer that hits the bell on the inside lip and allows it to sound. Fire alarm bells are 24VDC, the power supply being used is a 9 VDC supply which worked fine.

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