haltdetector
nounUK /ˈhɔːlt dɪˌtɛktə/
US /ˈhɔlt dɪˌtɛktər/
A haltdetector is a tool that tells you when something has stopped.
The haltdetector beeped when the machine stopped moving.
OTHER MEANINGS
2. A person who notices when things stop.
The haltdetector on our team spotted the broken conveyor first.
3. A computer program that finds where a process has stopped.
The haltdetector showed the line where the program froze.
4. A safety device that warns when a vehicle stops suddenly.
The haltdetector flashed a light when the truck halted.