Bzzz! The buzzer Bit makes a sound no one can ignore. Just like an alarm clock! It's great at sounding the alarm or annoying those nearby.
Doorbell
The buzzer converts the electrical signal it receives into a vibration, which creates a buzzing sound. The higher the signal it receives, the more intense the vibration, and the louder the sound is.
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I thought I was doing something completely dumb, but after inventing this, i learnt that sound...
Catch intruders in the act.
You can detect a power outage with this invention. It can be just be a buzzer going off or if...
It turns on a light when you scream because of your nightmare,so you wake up and,it also has a...