fire alarms on the ceiling. fire safety.

alarm alertness burning businessfinanceandindustry carbonmonoxidedetector ceiling danger detector digitallygeneratedimage domestic domesticlife electricalequipment fire firenaturalphenomenon firealarm homeinterior horizontal house household householdequipment indoors life lifestyles livingroom objects photography protection radiowave rescue retail safety security securitysystem sensor sign singleobject smoke smokedetector store threedimensional urgency wall warning warningsign