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i do not know who invented town criers, but i do know that they were supposed to tell people news and warn people
To warn other people regarding the danger.
Fire alarms help warn us when there may be smoke or fire that can cause injuries or damage. If people are not warned, the fire can grow until it's too late to stop it.
Smoke detectors are devices that detect smoke. They are used as warning devices in houses to warn people of fire.
RACE stands for RescueAlertConfineEvacuate/ExtinguishSo the first things you do are rescue people and alert them to the fire.
actually the laterns were a back up to warn the people in Charleston of the british invasion in case paul revere and William dawes were killed or captured before they could warn the people. as for who was watching for the laterns in the city I do not know.
To warn people of hazards use:trainingsafety meetingswarning signs
He warned the town of concord
Miss Strangeworth uses anonymous letters to subtly warn people about the possibility of evil in the town by dropping hints and insinuations in her correspondence. She believes that by sending these letters, she is fulfilling her duty to protect her community from potential harm.
One use is in smoke detectors to warn of fire.
They set a parameter warn people how far they may go and arrest or shoot those who disobey.
They interrupt all television and radio entertainment systems to warn the people.