sound alarm school wall bell notification higher educational institution during evacuation simple linear vector |
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| navigate by keyword : alarm alert fire bell emergency school evacuation caution danger rescue gray wall urgency filled urgent equipment noise color attention firefighter hanging help prevention call department wake safety ring vector flame loud mounted police protection sound siren warning security isolated icon sign symbol pictogram thin line silhouette outline simple black notification higher educational institution during linear |
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| Sound alarm school wall bell. Sound notification in higher educational institution during evacuation. Simple linear vector. |
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