If there is any sign of fire, smoke, or gas, evacuate immediately and call emergency services
If the alarm is a hardwired building alarm, contact building management, security, or the fire department
If the alarm is a smoke detector in your home and it is a false alarm, open windows and doors to clear the air
Press the hush or silence button on the alarm if it has one
Replace the battery if the low-battery chirp is causing the alarm sound
Clean dust or debris from the detector if it is triggering falsely
Reset the alarm using the manufacturer’s reset procedure
Turn off the circuit breaker only if you are certain it is safe and the alarm is not connected to a monitored fire system
Reinstall or replace the detector if it continues to malfunction
Follow local fire code and manufacturer instructions for any shutdown or maintenance
Call a licensed electrician or fire alarm technician if you cannot safely stop it