self-shutoff device
nounUK /ˌself ˈʃʌtɒf dɪˌvaɪs/
US /ˌself ˈʃʌtɔf dɪˌvaɪs/
A self-shutoff device turns itself off when it is done or when something is wrong.
The kettle has a self-shutoff device, so it stops boiling when the water is ready.
RELATED WORDS
OTHER MEANINGS
2. A built-in safety feature that cuts power to prevent overheating or damage.
The heater's self-shutoff device kicked in when it got too hot.
3. A mechanism that stops a machine automatically after a set time.
The treadmill's self-shutoff device stopped the belt after thirty minutes.
4. A feature that turns off a device when no one is using it.
The lamp's self-shutoff device saves electricity when the room is empty.