Outdoor Warning Sirens
Outdoor warning sirens, known to most people as weather sirens or tornado sirens, are one of the most effective ways to inform the public of dangerous weather conditions and other emergencies. This is true across the United States, especially in tornado-prone states like Oklahoma, Kansas, Nebraska, South Dakota, Texas, Missouri, and Iowa. And with the different financing options available, including U.S. Homeland Security Grants and U.S.D.A. Grants, the time to get a warning siren system has never been better.
Sentry Siren specializes providing state-of-the-art warning siren systems for communities, schools, and businesses around the world. Within our outdoor warning siren product line, there are two basic product categories:
Electro-mechanical warning sirens
Electronic / Giant Voice warning sirens
When it comes to providing a warning signal / siren tone over a large geographic area, or in areas with high ambient background noise, there is no better solution than Sentry's omni-directional, electro-mechanical warning sirens. Using the toughest continuous-duty motors available, our true 360 degree sound output pattern will provide the most cost-effective wide-area siren signal available. And keep in mind what FEMA says about omni-directional versus rotating sirens:
“..present a distinct advantage.. over rotational devices,” according to FEMA’s warning system guide. It says “a rotational device will have an overall lower dB level when assessed across a given time period than an Omni-directional device operating at the same frequency. Additionally, because sound has a reinforcing effect, Omni-directional devices can act as sound “boosters” with adjacent audible devices.” (4.4.5 FEMA OWS Technical Bulletin 2.0)
Further, the guide states: “Omni-directional sirens provide a greater area of coverage than do rotating or directional devices. They provide a more constant signal that improves public alerting, therefore Omni-directional sirens can be used to good advantage in areas with high population density and in areas with high ambient noise levels.” (4.4.5 FEMA OWS Technical Bulletin 2.0)
For applications that require a pre-recorded voice message to communicate immediate and specific instructions to an impacted population, Sentry's VR series Giant Voice sirens provide clear and intelligible voice messaging and siren tones with the highest Speech Transmission Index (STI) rating available in the industry.
Please explore our comprehensive warning siren solutions below and Contact Us to put us to work for your application!