fire alarm control panel activated and alert mode display message active hall smoke red flickering lights

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Fire alarm control panel is activated and in alert mode. Display message: Alarm active hall smoke. Red flickering lights and Royalty Free Stock Photo
Fire alarm control panel is activated and in alert mode. Display message: Alarm active hall smoke. Red flickering lights and Royalty Free Stock Photo
   
   
   
   
   
Fire alarm control panel is activated and in alert mode. Display message: Alarm active hall smoke. Red flickering lights and
   
   
   
   
   
   
   
A fire alarm control panel activated, displaying an alarm message with red flickering lights and a hand pressing the silence button

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