Hackaday readers may remember a whistle detection device that I [limpkin] designed some time ago. As [Kevin] saw the new Staff roll call, he discovered this project and wanted to make his version ...

Wherever there’s a concentration of residences with home-security systems, there will be a lot of false-alarm calls. As the county grows, so will the number of false alarms. Unlike some Central ...

The alarm sounds 10 times. Myers said the whistle is sounded only in the event of fires. Meyers said all the volunteer firemen are issued beepers, which are activated by certain tones through the ...

Casey Hospital executive director Peter Faulkner said the alarm failure had not affected patients. The whistles were issued ... Mr Faulkner said all systems had been deemed fully operational ...

$47.99 (usually $59.99), Amazon Like the reviewed sunrise alarm clock, this model comes with all the bells and whistles of helpful features. If the yellow light doesn't pique your fancy ...

The team set out to systematically test this “wing whistle alarm” idea ... The researchers started looking for this device by taking high-speed video of crested pigeons taking flight, and ...

Rising steam from showering or even cigarette smoke in close proximity to the device can activate the alarm. Dust or dirt that accumulates inside the smoke detector, or tiny insects that enter the ...