ไซเรน, สัญญาณเตือนไฟไหม้, สัญญาณเตือนภัย, ระฆัง, กรณีฉุกเฉิน, สัญญาณ, การเตือน, หลังคา
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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