'Emergency vehicle siren sends' presentation slideshows

An Overview of Sirens on Law Enforcement Vehicle

Police sirens have evolved greatly. The earlier ones were mechanical devices that were not very reliable and required a high degree of maintenance. These have now been replaced by electronic devices which have to be directly plugged into a power source to be activated. Further, different types of sounds and volume can be generated from a single electronic police siren. For more info sales@tomar.com

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