fire alarm beeps 3 times
The service life is determined by the date of production not the date of installation. Hold the Smoke Alarm test button for 20-25 seconds. Preparing A Ecse Classroom For Fire Drills…
The service life is determined by the date of production not the date of installation. Hold the Smoke Alarm test button for 20-25 seconds. Preparing A Ecse Classroom For Fire Drills…
