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Foss Security
Sioux Falls, SD | (605)339.0575

Home & Business Technology Systems

Built on Local Trust for Over 25 Years.

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5-Star Rated | Google Verified | Voted The Local Best

For The Home

Your home should be easy to protect and easy to manage. Foss Security designs custom residential systems that combine smart security, cameras, and home automation into one simple experience. From alarm systems and video doorbells to smart locks, lighting, garage doors, and mobile app control, we help homeowners across the Sioux Empire stay connected to what matters most—whether they’re home or away.

home alarm systems controlled from your phone
A home alarm system is more than break-in protection. You can’t be everywhere at once, but your system can. With professional installation, dependable monitoring, and simple controls, you get real protection that fits your home and your routine.
Alarm Systems
burglar caught on camera in the backyard
Are you looking for extra protection or just want to keep an eye on what’s happening around your home? Our cameras make it easy to stay connected with clear live video, reliable deterrence, and quick access to recorded footage whenever you need it.
Camera Systems
manage and automate everything in your home
Elevate your home security system with our smart home management additions. Control lights, locks, and thermostats effortlessly, while our advanced water monitoring protects against leaks.
Home Management

For Your Business

Foss Security provides commercial security and infrastructure solutions for businesses across the Sioux Empire. We design and install custom alarm systems, surveillance cameras, access control, fire alarm systems, structured cabling, paging and intercom systems tailored to your facility and operations. Whether you’re protecting employees, managing multiple entry points, upgrading network cabling, or improving communication throughout your building, our team delivers reliable systems backed by local service, professional installation, and ongoing support.

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
Ongoing Support & ​Exceptional Service​
Customized & Innovative Solutions
Transparent & Fair Pricing

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.  "