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Ohio-Based

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Veteran Owned

“It’s a matter of trust. For over 30 years, generations of families and businesses placed their trust in Northwestern Ohio Security Systems, Inc. to provide security. We put your interests and needs first. We then apply the best products on the market to give you the most cost-effective solution. Many of our employees have been doing this for over 20 years! You see the same people and know your security is in very experienced hands. Our service technicians are factory trained and network certified, with most having over 10 years of experience. Their goal is to service your needs quickly and do the job right the first time. Experience counts and saves you money! Your satisfaction is 100% guaranteed.”

- Jim Kostelac, Owner

NWOSS Co-Founder Jim Kostelac

Jim Kostelac, Owner

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Who We Are

Northwestern Ohio Security Systems, Inc. (aka NWOSS) was established in Lima, Ohio in 1981 by brothers-in-law Trell Yocum and Jim Kostelac, a U.S. Army Veteran. NWOSS is a regionally renowned and award-winning security integrator. Seeing a need to provide its customers with professional, local monitoring services, NWOSS also established its own Monitoring Station in Lima, Ohio.

NWOSS has mainly catered to commercial clients–businesses, government agencies, factories, schools, hospitals, and more. To protect their own homes and families, Jim and Trell wanted these same commercial-grade systems for themselves. However, they noticed a lack of quality products being offered for non-commercial property owners and saw an opportunity to help others also looking for best-in-class options.

A+ Rating

We are proud to be accredited by the Better Business Bureau and boast an “A+” rating.

Quality Products | Experienced Team | Top-Rated Customer Service

1981
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1981
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1989
1991
1994
1998
2004
2005
2006
2008
2011
2012
2015
2018
2019

NWOSS Opens Doors

We began operations out of 543 W. Elm Street in Lima.

We began operations out of 543 W. Elm Street in Lima.

The Men Who Started It All

Owners Jim Kostelac & Trell Yocum

Owners Jim Kostelac & Trell Yocum

Small Beginnings

Our first technician and company vehicle

Our first technician and company vehicle

First Advertisement

Our very first brochure advertising our products and services.

Our very first brochure advertising our products and services.

Monitoring Station

Our original Monitoring Station was equipped with the latest technology of the times.

Our original Monitoring Station was equipped with the latest technology of the times.

NWOSS Expands

nwoss-timeline-1

With the addition of the building next door at 549 W. Elm Street, we doubled our office space.

Training Session

nwoss-timeline-2
Gary Neubert, Chad Sidey, Sam Bonifas

With so many technicians, we implemented mass training sessions.

10 Year Anniversary

Steve Spahr, Jim Kostelac, Trell Yocum
Steve Spahr, Jim Kostelac, Trell Yocum

NWOSS celebrates 10 years of serving the Lima community.

First Billboard

Our first ever billboard advertisement.

Our first ever billboard advertisement.

NWOSS Moves

We moved to our current location, 121 E. High Street in Lima.

We moved to our current location, 121 E. High Street in Lima.

NWOSS Opens Branch Office

We opened our Columbus branch location at 1250 Chambers Rd.

We opened our Columbus branch location at 1250 Chambers Rd.

Exponential Growth

Lynn Tippie, Mike Pulfer, Denny Crouse, Sam Bonifas, Chad Sidey, Jason Roberts, John McNamara
Lynn Tippie, Mike Pulfer, Denny Crouse, Sam Bonifas, Chad Sidey, Jason Roberts, John McNamara

We had grown exponentially, as shown in the technician training session.

Meet the Fleet

We had over 20 company vehicles, yet another nod to our exponential growth.

We had over 20 company vehicles, yet another nod to our exponential growth.

Columbus Branch Moves

Our Columbus branch moves to 3211 Hilliard-Rome Rd.

Our Columbus branch moves to 3211 Hilliard-Rome Rd.

30 Year Anniversary

Linda Fisher, Melinda Bankston, Sharon Snyder, Tony Smith, Diane Poe
Linda Fisher, Melinda Bankston, Sharon Snyder, Tony Smith, Diane Poe

A few employees enjoy the lovely weather as they celebrate the company's 30th Anniversary.

Open House

Steve Spahr, Dan Protsman, John Kostelac, Mike Pulfer, Dustin Beilke
Steve Spahr, Dan Protsman, John Kostelac, Mike Pulfer, Dustin Beilke

Our sales team gear up for our first Customer Appreciation Open House.

Rich History

To celebrate all our wonderful memories together, our staff created this collage of images over the last three decades.

To celebrate all our wonderful memories together, our staff created this collage of images over the last three decades.

NWOSS Expands to Cleveland

NWOSS Medina

Medina Office Plaza Location

Columbus Office Moves

NWOSS Columbus

Columbus Office Location

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