When designing and installing your next fire alarm project, the Koorsen Engineering Team has the expertise and experience you need. Since 1946, they’ve designed hundreds of fire alarm systems to meet the needs of businesses of all sizes. Contact Koorsen for your next fire alarm design and installation project, whether new construction or an upgrade or expansion.


From design to installation to regular inspections and service, Koorsen Fire & Security is your one-stop-shop for all your fire alarm system needs. We service and inspect all brands of fire alarm systems from a range of high-quality manufacturers. To stay up to date on the evolving technology behind the fire alarm systems, our technicians take part in continuous training and certifications.


From diagnosing and fixing an error on your fire alarm panel to upgrading the system to meet new standards and codes, you can trust the experts at Koorsen to keep your fire protection systems functioning properly to protect the lives and property of your business. Our team is available 24/7 to handle any fire alarm emergency or issue your business may face.
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Fire Alarm FAQs

There is probably an issue on the panel. Contact Koorsen, and a fire alarm technician will diagnose and fix the problem leaving you with a working fire alarm that isn’t beeping.

Typically, yes, depending upon occupancy, AHJ, and your insurance company requirements. Very rarely is there a situation when a fire alarm doesn’t require monitoring by a central station.

This is determined by your local AHJ, but it is recommended for proper notification within your building if a fire occurs. A fire sprinkler system is designed to save the property, while a fire alarm is designed to save lives.

Per the NFPA, your fire alarm needs to be inspected by a certified technician once per year. However, some insurance companies require inspections twice a year.


Manual Initiating Devices

Pull Station:

Usually wall-mounted, when a person pulls the handle, the fire alarm is activated.

Break Glass Station:

Similar to a pull station but require person to break glass cover before activating the fire alarm.

Automatic Initiating Devices

Smoke Detectors:

A device that senses smoke and sends a signal to the fire alarm panel.

Heat Detectors:

A device that senses abnormally high temps and sends a signal to the fire alarm panel.

Duct Detectors:

A smoke detector device that is installed in HVAC ducts.

Beam Detectors:

A device that detects smoke across large areas using a projected beam of light.

Tamper Switches:

A mechanical and electrical device connected to a sprinkler valve that sends a signal to the fire alarm panel if the valve is partially or fully closed.

Fire Sprinkler Water Flow Switches:

A device that detects movement of water in a fire sprinkler pipe.


The fire alarm control panel is the brain of the fire protection system that monitors all initiating devices and activates notification devices when there’s a fire so everyone in the building can evacuate safely and the fire department can respond quickly.



When the fire alarm system is activated via an initiating device, the strobe, a flashing light, is activated, letting people know to evacuate. Strobes are especially important for those who are hard of hearing or deaf.


In fire alarm systems that use a voice evacuation system, a speaker is used.

Speaker Strobe:

A combination of a speaker and a strobe that is used in a voice evacuation system.

Horn Strobe:

Unlike a speaker strobe, a horn strobe emits a loud alert sound along with the flashing strobe light.


In case of a power outage, a battery backup powers the fire alarm system so that it can continue to operate and monitor for fires.


In case of a power outage, a battery backup powers the fire alarm system so that it can continue to operate and monitor for fires.


In the event of a fire, a door closer/holder will close the fire doors in a building to limit the spread of the fire and smoke.

Visual Inspection Schedule

  1. Control Equipment – checked weekly
  2. Batteries – checked monthly or semi-annually (depending on the type)
  3. Duct, Heat & Smoke Detectors – inspected semi-annually
  4. All Equipment – checked annually

Testing schedule

  1. Control Equipment – tested annually
  2. Batteries – tested annually
  3. Initiating Devices – tested annually
  4. Notification Appliances – tested annually
  5. Fire Alarm Control Unit Trouble Signals – both audible and visual signals tested annually
  6. Integrated Mass Notification Systems and Specialized Components – tested annually

The Koorsen Difference



Family owned and operated for over 75 years.


Over 1,200 employees with locations in 25 cities across the Midwest and South.


NICET certified and factory trained. Fully insured and bonded.

Fire Alarm Systems

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