*The Angi rating for Home Security System Service companies in Keystone, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.
*The HomeAdvisor rating for Home Security System Service companies in Keystone, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Security System Service needs.
Last update on July 16, 2025
Serving Keystone, SD and surrounding areas
In business since 2007
Free estimates
Emergency services offered
"I self installed our FrontPoint system. It went smoothly and my questions were answered efficiently and professionally by the FrontPoint staff. I would highly recommend FrontPoint as a home security system."
Serving Keystone, SD and surrounding areas
In business since 2007
Credit card accepted
"It went great! From Travis the sales person to Noah the installer I couldn't have asked for a more professional and through team to deliver my home security needs. We just bought a new house in a neighborhood that's up and coming but there's still an element that we want to protect our home and valuable from. Security One helped us find a system that we could monitor while we're away and that would make my girlfriend feel safe when I'm not a home. We highly recommend them especially Travis and Noah. Ask for them by name!
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+16
Serving Keystone, SD and surrounding areas
In business since 1998
Credit card accepted
"We like their service. We haven't had any problems. They are very good. This was the first time we've had an alarm/security system in our home. The supplier is ADT. I like that I can set my alarm every night before I go to bed."
Serving Keystone, SD and surrounding areas
In business since 1992
Free estimates
Emergency services offered
"About 4 years ago I need my home protected by something other than my dog while I was not home looking for a job. I needed something affordable, simple to use and install my self as my house was not prewired. I found Protect America and it had all I needed and more. Over the years I have added to my system more sensors, motion detectors, camera's, carbon monoxide sensor, and monitored smoke detectors. All of it was simple enough to do with some help with their Installation Technician walking me though everything on the phone. I have had other companies try to get me to switch to them, but what I have works and they could not beat the price so I told them no thanks."
Serving Keystone, SD and surrounding areas
In business since 2007
Free estimates
Credit card accepted
"The reviews are right on point, the best security system for the ease of install and service after your system is up and online."
+1
Serving Keystone, SD and surrounding areas
In business since 1998
Free estimates
Emergency services offered
"LOVE this system! Customer service was extremely nice and made my experience effortless. Speaking of effortless, the self-installation was super easy. It took me less than 30 minutes from start to finish to get my system up and running. Highly recommended!"
Serving Keystone, SD and surrounding areas
In business since 2014
Free estimates
Emergency services offered
"The work went very well. I believe the job was more difficult than the work described in the estimate. There was no additional charge. Alvin answered every question. He responded to my emails promptly. He even came back to reset the new system after my dog ate one of the remotes. Two months later my 10 year old TV quit. I had several questions about a replacement TV, which was returned based on Alvin's advice. I will make an appointment to have Alvin install the new TV."
Serving Keystone, SD and surrounding areas
In business since 2020
Emergency services offered
Credit card accepted
AIO provides computer support services for all PC platforms including Apple OSX/iOS, Microsoft Windows, and Google Android devices. \n\nWe are the only company on Angi.com with a BBB A+ rating providing nation-wide IT support on-site/remote services from over 1500 locations. You can call us directly at 832-402-1335, option 1 for sales, to be connected to a sales engineer if you need immediate help. You can also visit our website at https://aiosupport.net. We look forward to helping you!
Serving Keystone, SD and surrounding areas
In business since 1971
Credit card accepted
"They take money on muy account for my home warranty service, and they are very responsive, and very reliable. They send Repair companies to my house for repairs and services."
+2
Serving Keystone, SD and surrounding areas
In business since 2005
Free estimates
Credit card accepted
"They did a great job on helping to restoring our system. The technicians are very knowledgeable."
The average cost of a home security system is about $700, ranging from $280 to $1,150. Costs to consider include equipment, surveillance fees, and other additional features. Cost factors that determine your system’s price include the type of security system, materials, labor, activation fees, monthly fees, and permits. Additional features and upgrades may include:
Video surveillance monitoring: $40–$65 per month
Smart home locks: $150
Smart home lighting: $15–$90
Smart smoke, fire, and carbon monoxide alarms: $35–$100
Smart thermostat: $130–$500
Yes, a home security system can be worth it for your peace of mind alone, but it can also save you up to 20% on your home insurance. The insurance savings will help defray the initial setup costs and subscription costs over time. Locations with higher crime rates also make home security systems a valuable investment, but it ultimately depends on your personal preferences and asset values.
With the popularity of DIY security cameras and video surveillance systems, it’s important to understand the benefits and potential drawbacks to decide if it’s the right choice for you. Advantages and disadvantages include:
Pros
Video footage readily available
Reduced home insurance
Save on labor costs by installing security cameras yourself
Wireless systems are easy to move and set up
Monitor from your smartphone
Avoid false alarms
Cons
Features may be vulnerable to hackers
No direct link to authorities
Risk of installing the system improperly, reducing its effectiveness
Whether a security system or security cameras is a better choice for you depends on your needs and preferred comfort level. A security system can cost more depending on the features you choose, but it’s a more proactive and protective approach to home security by alerting you and authorities of any emergencies. Using a security camera system is a more reactive approach because while you can monitor the camera footage, it does not alert the proper authorities for you.
Understanding the pros and cons of installing a home security system is the first step to deciding which one is right for you. A few of the advantages and disadvantages include:
Pros
Added security for your household
Reduced home insurance premiums
Many smart home integrations available
Security companies can monitor your home
Cons
Expensive setup costs
Subscription costs can add up quickly
Features may be vulnerable to hackers
Weak signal reduces the security of a wireless system
From average costs to expert advice, get all the answers you need to get your job done.
A security camera system gives you peace of mind that there’s always a watchful eye on your home. Learn the costs of installing surveillance cameras.
Feeling safe at home should always be a priority, and installing a new security system can help you do just that—no matter where you live.
Which is better for your home: a wired security system or a wireless system? We’ll explore the pros and cons of each option to help you decide.
Monitored vs. unmonitored home security systems: which can best defend your home from crime and other dangers? Learn the differences between these two products.
This guide will help you disconnect a home alarm system, whether you’re installing a new system or just want old electronics out of your house.
Security system maintenance is important to keep your home protected from threats and false alarms, alike. Explore our security system maintenance checklist.
