Drop everything and slightly organize your area. Cover anything containing chemicals or fire. Calmly evacuate the building with your class.
because it probably has a heat detector in the alarm therefor it goes off.
If the fire alarm goes off and then stops, you should still evacuate the building immediately as it may be a false alarm or a temporary issue. Follow your building's evacuation procedures and wait for further instructions from authorities.
the electromagnet makes the door close when a fire alarm goes off
If the fire alarm goes off, exit the building immediately!
If the fire alarm goes off unexpectedly in the middle of the night, you should quickly and calmly evacuate the building following the designated escape routes. Do not ignore the alarm or assume it is a false alarm. Once outside, call emergency services and wait for further instructions.
Manually turning off a shunt trip breaker should not set off the fire alarm. The only way that the breaker could set off the fire alarm when turned to the off position is if there is an auxiliary contact on the breaker connected to the fire alarm circuit. This is not usually done because the breaker should be able to be turned off when doing maintenance on the breakers circuit. If the breaker is a mandatory feed breaker to a piece of fire alarm equipment and shouldn't be left in the off position it might have a trouble circuit connected to the fire alarm panel. A trouble alarm on a fire alarm panel is different from an alarm circuit alarm.
An alarm clock will typically beep for about an hour when it goes off. This is if the alarm is not turned off first.
To effectively shut off a fire alarm, locate the alarm panel and enter the code or use a key to silence the alarm. If you cannot do this, contact the fire department for assistance.
To turn off a fire alarm in your house, locate the alarm and press the reset button or remove the batteries. Make sure to address any potential fire hazards before turning off the alarm.
If there is a fire alarm going off you should call the fire department. There may be a gas or carbon monoxide leak. If the fire department is called, the landlord will be forced to do something.
If the fire alarm goes off at 3am, you should calmly and quickly evacuate the building following the designated escape routes. Do not use elevators and cover your nose and mouth with a cloth if there is smoke. Once outside, call emergency services and wait for further instructions.
When the smokes reaches the device and sets off the alarm