Before the period dominated by electronic sirens, and even before that, by mechanical sirens, church bells were the most used for mass warning to the population.
History of the Church Bell Christoph Paccard Bell Foundry
Historic bell at Sea Cliff Fire Department to be restored, Herald Community Newspapers
How sweet the sound: A look at local historic church bells
History of church bells — The Worshipful Company of Turners
Meeks, Watson & Company Bells, Church Bells and Bell Ringing Equipment
St Michael and All Angels Church in Marden without bells until Christmas after removal for £50k revamp
Church Bells - The Verdin Company
At First There Were Bells - Electronic outdoor sirens and early warning and emergency notification systems
Holy Archipelago reaffirms to me the importance of Orthodoxy in Russia” /
Rezoning to allow Sacred Heart church bells to ring again in 2024
St Michael and All Angels Church in Marden without bells until Christmas after removal for £50k revamp