What happens next?

How to stop a smoke alarm
Press and hold the reset button on your smoke alarm.
The reset button is usually in the center of the alarm or somewhere on the front. If you don't see a button, feel around the sides of your alarm with your fingers to see if the button is there.
When you find it, press and hold it down until the alarm stops. If your smoke alarm is up high and you can't reach it, carefully stand on a sturdy chair to push the button.