World’s Loudest Alarm Clock

Normal alarm clocks are not going to work for heavy sleepers but with the addition couple of 140-decibel electric horns, it works really well.
“A relay, a 12-volt laptop power supply and a whiff of solder later, and this cheap alarm clock was transformed into the most ear-shattering alarm clock you’ll ever hear.”
Video after the break.
[via Techeblog]










