Join us at TNW Conference 2022 for insights into the future of tech →

All Articles for

Doorbell

A doorbell is a signaling device typically placed near an entry door to a building. when a visitor presses a button the bell rings inside the building, alerting the occupant to the presence of the visitor. although the first doorbells were mechanical, activated by pulling a cord, modern doorbells are electric — they are actuated by an electric switch.