Inventions · Topic 103 of 112
The Doorbell
⭐ MasteredA doorbell lets visitors signal that they are at the door. Early doorbells were simple mechanical bells, while modern ones can use electricity, wireless signals or cameras.
💡 Fun fact
The first electric doorbell was invented in the 1800s and rang when a button was pressed.
All about The Doorbell
A doorbell lets visitors signal that they are at the door. Early doorbells were simple mechanical bells, while modern ones can use electricity, wireless signals or cameras. Some doorbells can send an alert to a phone when someone presses the button.
The first electric doorbell was invented in the 1800s and rang when a button was pressed.
🎮 Try it yourself!
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