Skip to main content
Foss Security
Sioux Falls, SD | (605)339.0575

  • Built on Local Trust.

    Driven by Reliable Technology.

    We help Sioux Falls homes and businesses stay connected, protected, and supported with solutions that are made to last—installed by people who live right here. 

    Start Your Project

    Locally Owned | 20+ Years Experience | 5-Star Rated | Google Verified | Voted The Local Best

For The Home

home alarm systems controlled from your phone
The most affordable and comprehensive way to protect your family and property!
Alarm Systems
burglar caught on camera in the backyard
Do you want an additional layer of protection or are you just curious about what is going on around your home?
Camera Systems
manage and automate everything in your home
Call it home management or automation—your home is getting smarter and more convenient.
Home Management

For Your Business

commercial alarm systems manage multiple locations from one dashboard
FOSS Security believes that your business is not only your livelihood but part of you. That is why it's worth protecting with intelligent security systems designed to perfectly fit your business, your way of operating it, and your budget.
Intrusion Systems
surveillance camera system
Facing a myriad of challenges like internal threats including employee theft and intellectual property breaches, as well as external risks like break-ins and vandalism, businesses can significantly bolster their security with a robust surveillance system.
Surveillance Systems
access control systems for business such as card readers
Enhancing your business security goes beyond just intrusion and surveillance systems; incorporating access control is a vital step to not only boost your overall security but also increase your property value.
Access Control Systems
fire alarm pull
In case of fires, our commercial fire alarms could be the difference in saving your business. FOSS Security has the expertise to provide all of your installation, maintenance, monitoring and testing requirements.
Fire Alarm Systems
cabling infrastructure keeps your business moving
Structured cabling now encompasses data, voice, security, TV, and audio/video networks. It's crucial for businesses to recognize that the backbone facilitating the flow of their daily information is the building's cabling infrastructure.
Cabling Infrastructure
paging, intercom, music for your business
Whether you're looking to enhance your workspace ambiance with overhead music, implement a robust emergency paging system for employee safety, or fortify your front door with advanced intercom technology, FOSS is here to guide and support you through this process.
Paging & Intercom Systems
Community Commitment ​& Local Expertise

We’re a locally owned business with over 20 years of experience, dedicated to serving our neighbors with care and professionalism. Being part of the Sioux Empire community drives us to deliver personalized solutions that big chains can’t match.

Ongoing Support & Exceptional Service

We stand by our customers with reliable support, professional installations, and systems designed to perform and last. Your satisfaction is our priority, from the moment we design your system to years after it’s installed.

Customized & Innovative Solutions

No two projects are the same; we create tailored systems that address your specific needs using cutting-edge technology. We prioritize understanding your goals, offering free consultations and innovative solutions that adapt as your needs evolve.

Transparent & Fair Pricing

Our pricing is competitive and straightforward, ensuring you get the best value without compromising on quality. Every customer is treated as a priority, with solutions designed around your budget and long-term needs.

Testimonials

" We have been with Foss since we moved to Sioux Falls last summer and they are great! The install was smooth and when some of the tech needed adjusting, they were all over it! They didn't try to oversell anything! Great company, highly recommended for your security needs! "

" Overall Great Customer Service!! I had a previous security company and it was a disaster- nothing worked and was hooked up properly. Foss came in and fixed those issues and are always willing to help if an issue arises (few and far between now)! I would definitely recommend using them!!I would definitely recommend using them!!I would definitely recommend using them!! "

" Jason and the team at Foss Security were great to work with during our new construction process. Always there to answer questions and customized a setup for us based on what we were looking for. I highly recommend Foss Security!  "
" Foss has been awesome to help us with our specific office security needs, they are quick to response and troubleshoot. Would highly recommend them for any office or home security needs.  "
If Zoho inserts them automatically, toggle off PageSense or SalesIQ if not actively used.