Evacuation Sirens, otherwise known as warning devices, are designed to warn of an approaching dangerous situation. They are placed near the shortest possible path of escape. They play a significant role in emergency preparedness and response. These devices are normally used by first responders and members of the armed services.
The Siren Systems
A siren is normally activated either by external factors such as changing temperature or low pressure or by internal factors such as low battery levels or radio frequency interference. An audio signal called a “wobble” is also added to the signal to increase the chances of audible waking people from a slumbering state. A siren usually sounds during the lowest possible alerting period to create maximum protection for the people in the area. The wobbler contains a microphone that receives the audio signal and converts it into an electric signal.
Types of Sirens
There are two basic types of siren alarms. The first type uses a pager to emit a sounding alarm when the siren goes off. These alarms tend to be less reliable than the siren-on-built-in alarms used in some homes. Pager alarms are also more expensive.
The second type of siren is a hard-wired siren that uses radio signals to communicate with a central device mounted on the vehicle. Radio signals transmitted from the main device are interpreted by the siren and sound an audible alarm. These sirens are more reliable than pager alarms.
The Application of Evacuation Sirens
Evacuation sirens can be placed both inside and outside the home. There are many types of sirens to choose from. You can even choose models that have a dual function. You can activate an audible alarm when an intruder comes near your home and then activate a silent siren in case of an emergency while you’re away from home. Many models also allow you to adjust the volume of the alarms so you can be notified of any approaching vehicle.
Keeping You Safe
Evacuation sirens are useful in alerting people in an emergency. If you are unfamiliar with the proper use, it is strongly recommended that you purchase a professional training kit that will assist in arming and disarming your siren. If you’re unsure whether an evacuation siren is right for your home or business, it’s a good idea to contact a professional alarm company for additional information and assistance. Outdoor warning devices like these can save lives.
Manufacturers recommend the use of sirens that emit a constant high-pitched whistle. This is to alert the public of an approaching emergency and to keep them clear of the area.
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