“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
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.
Quality Products | Experienced Team | Top-Rated Customer Service
NWOSS Opens Doors
We began operations out of 543 W. Elm Street in Lima.
The Men Who Started It All
Owners Jim Kostelac & Trell Yocum
Our first technician and company vehicle
Our very first brochure advertising our products and services.
Our original Monitoring Station was equipped with the latest technology of the times.
With the addition of the building next door at 549 W. Elm Street, we doubled our office space.
With so many technicians, we implemented mass training sessions.
10 Year Anniversary
NWOSS celebrates 10 years of serving the Lima community.
Our first ever billboard advertisement.
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 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.
Columbus Branch Moves
Our Columbus branch moves to 3211 Hilliard-Rome Rd.
30 Year Anniversary
A few employees enjoy the lovely weather as they celebrate the company's 30th Anniversary.
Our sales team gear up for our first Customer Appreciation Open House.
To celebrate all our wonderful memories together, our staff created this collage of images over the last three decades.
NWOSS Expands to Cleveland
Medina Office Plaza Location
Columbus Office Moves
Columbus Office Location