a clapper
Inside the bell housing.Inside the bell housing.
The metal pendulum inside a bell is called a clapper. It strikes the sides of the bell to produce sound when the bell is rung.
clapper
When the Fire Bell Rang - 1915 was released on: USA: 23 March 1915
A clapper.
Clapper
A fire alarm is usually the constant ringing of a bell or bells
Ring.
Clapper
Inside the Fire - song - was created in 2020-02.
A sprinkler bell valve in a fire protection system controls the flow of water to sprinkler heads. It opens when the system detects a fire, allowing water to flow and extinguish the fire.
Well a fire dog doesn't help after a fire, After the fire they go back inside the fire truck. But when the fire is happening they go inside and usually save humans from the fire.