How to sign: a push button at an outer door that gives a ringing or buzzing signal when pushed
Similiar / Same: doorbell, buzzer
Categories: button, push, push button
Within this category: night bell
How to sign: a hollow device made of metal that makes a ringing sound when struck
Categories: acoustic device, signaling device
Within this category: church bell, cowbell, death knell, dinner bell, electric bell, fire bell, Liberty Bell, school bell, sheep bell, shop bell, sleigh bell, tocsin