Replace the battery with a fresh one
Make sure the battery is installed correctly
Close the battery compartment fully
Press the test/reset button
Clean dust from the alarm with a vacuum or soft brush
Check for loose wiring if it is a hardwired alarm
Reset the circuit breaker if needed
Replace the alarm if it is expired or malfunctioning
Check for low battery or end-of-life warning patterns
Contact the building manager or an electrician if the beeping continues