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Best home security system pros near Saint Clair, MO

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Top-Rated Home security system pros in Saint Clair - Updated Nov 2026

Avatar for SafeStreets - ADT Authorized Provider
SafeStreets - ADT Authorized Provider
4.8(
320
)
Alarm or Security System - InstallAlarm or Security System - Install - For BusinessAlarm or Security System - Monitor+5 more

Serving Saint Clair, MO and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

"SafeStreets made home security easy and stress-free. The technician was knowledgeable, friendly, and completed the installation quickly. Everything was explained clearly, and the ADT system works flawlessly. I feel much safer knowing my home is protected. Excellent service from start to finish—highly recommend SafeStreets for peace of mind and protection!"
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+1

4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for DST Security
DST Security
4.9(
23
)
Alarm or Security System - InstallAlarm or Security System - Install - For BusinessAlarm or Security System - Monitor+1 more

Serving Saint Clair, MO and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"I purchased a house with an existing security system. JR came out and was able to tell me exactly what I needed to update the system. During the installation the guys walked me through how to work everything. Very happy I went with DST Security."
Response time2 days
Recommended by100%of homeowners
Avatar for Electronics 911
Electronics 911
5.0(
5
)
Alarm or Security System - RepairAlarm or Security System - InstallAlarm or Security System - Install - For Business+4 more

Serving Saint Clair, MO and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

"The owner of Electronics 9-1-1 installed an eight-camera home security system in my home. The entire experience, from initial consultation to finished product, was the model on which all other advertisers' services on Homeadvisor should be based! The company owner's recommendations about installation techniques, technical knowledge and considerations, equipment capabilities, scheduling accommodations, and modifications in mid-installation to overcome unforeseen issues were all spot-on, and resulted in a system that exceeded every expectation. Would use Electronics 9-1-1 again in a heartbeat, and it is a pleasure to recommend them to anyone needing security system installation or service of the highest quality."
Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Custom Technology Solutions
Custom Technology Solutions
4.0(
11
)
Smart Home System - Install or ServiceSurveillance Cameras - Install or RepairSurveillance Cameras - Install or Repair - For Business

Serving Saint Clair, MO and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

Where Highest Quality Meets Lowest Price! We offer over 18 years experience in the low-voltage Industry. We've established a solid reputation in security projects, home automation, home theater, TV installation and access points, phone and data communications for large executive homes, corporations, and residential homes across the country. We are licensed in both the city and the county. We're committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

Response time3 days
Recommended by100%of homeowners
Mid Knight Fire and Security
5.0(
2
)
Alarm or Security System - InstallAlarm or Security System - Install - For BusinessSurveillance Cameras - Install or Repair+1 more

Serving Saint Clair, MO and surrounding areas

Approved

In business since 2023

Credit card accepted

Offers commercial services

"Midnight Fire and Security Systems are highly recommended. They demonstrated professionalism and expertise, conducting a thorough assessment and identifying critical areas for improvement within a reasonable price. The team showcased attention to detail, ensuring every connection was safe and efficient. They enhanced our home security and fire protection. Definitely will be my go to business for fire and security needs."
Avatar for Protect Your Home
Protect Your Home
2.6(
6
)
Alarm or Security System - InstallAlarm or Security System - Monitor

Serving Saint Clair, MO and surrounding areas

Approved (Corporate)

In business since 1998

Free estimates

Credit card accepted

Protect Your Home is a leader in the home security industry, providing safety and peace of mind to more than 1.5 million families nationwide. Since we emerged in 1998, we've grown from a company of few to having over 2,000 high performance team members, three locations in Indianapolis, a sales center in Kentucky, and over 128 field branches across the country—and we're still growing. \n \nFor nearly 20 years, Protect Your Home has partnered with ADT®, the #1 name in home security. Today, with our national reach, we are one of ADT's biggest partners and the only partner to be designated as an Authorized Premier Provider. \n \nOur commitment to serving others combined with our projects, events, and culture contribute to the development of our team professionally, personally, and financially. \n \nIt's our mission. It's who we are. It's our legacy. \n

SA and Homeowner
Recommended by100%of homeowners
Avatar for Services Butler
Services Butler
5.0(
1
)
Alarm or Security System - MonitorAlarm or Security System - Monitor - For Business

Serving Saint Clair, MO and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

We specialize in residential and Monitored Security & Automation. \nOptions include: Remote Monitoring | Indoor & Outdoor Cameras | Camera Doorbells | Smart Locks. \n \nOur system is custom built to deter real threats our home security systems doesn't just record crime, they help prevent it. With outdoor security cameras that detect lurkers and scare them away, a doorbell camera that detects and protects packages, and smart locks, lighting, and security sensors—your home is always protected.

Indoor Camera
Vivint Panel - 2
Vivint Panel
Response time2 days
Response rate96%
2 neighbors recently requested a quote
Avatar for Monitex Security, Inc.
Monitex Security, Inc.
New to Angi
Alarm or Security System - MonitorAlarm or Security System - Monitor - For Business

Serving Saint Clair, MO and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

24/7 live protection, prevention & peace of mind.\n\nWant reliable, effective security that’s within budget? Monitex Security provides 24/7 live CCTV monitoring for construction sites, residential buildings, warehouses, and businesses across the U.S. and worldwide. Our virtual guards use AI + human intelligence to detect threats, deter intruders via audio, and dispatch law enforcement in real time. Services include remote doorman, access control, and camera installation. Cut your security costs by up to 70%. Based in Brooklyn, NY. Fully insured. We also operate in all 50 states as long as there's a need for live security surveillance monitoring. We only provide Virtual Remote Guardian. We do not offer any other services. We offer over 20 years experience in the Security Services Industry. We've established a solid reputation in security projects for residential homes in the Lewisville and surrounding areas. \n

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Home Security Systems FAQs, answered by experts

It depends on your specific needs. A security system typically includes alarms, sensors for windows and doors , and 24/7 monitoring services, offering comprehensive protection with immediate response to potential threats. Cameras, on the other hand, primarily provide visual surveillance and evidence collection. A security system is preferable if your primary concern is deterring intruders and receiving real-time alerts. Cameras are ideal for monitoring and recording activities but might offer a different level of active protection. In many cases, a combination of both—a security system with integrated cameras—provides the most robust home security solution, offering prevention and documentation.

Smart home upgrades can be worth the money. Several upgrades, including smart thermostats and ceiling fans, can help reduce your energy bills. Others make life more convenient, freeing up your time to do what you love (or get more work done). And some smart home upgrades, such as entertainment systems, simply make life more enjoyable. All are worthy causes.

There are a number of ways to secure windows. You can add motion detectors or window sensors to detect movement and impact or change the window locks to make them stronger. Some of the ways you can secure windows are much like how you secure a home: closing the curtains at night and setting up security cameras outside so you can monitor your property even in your absence. 

While all security lighting systems offer different benefits, motion sensor security lights have the most advantages and the fewest cons for the average homeowner. While the upfront cost can be hefty, automatic, motion-detected activation will reduce your energy bills in the long run by ensuring the lights are only turned on when necessary. Plus, they’ll ward off intruders and help invited guests find their way onto your property in equal measure. 

Keyless locks are great for convenience, letting you unlock doors with a code or your phone so you don't need to carry keys around. They also often come with helpful features like temporary codes for guests. On the downside, they can be more costly up front and do require batteries that will eventually need replacing. If you value ease of use and additional security features, keyless locks are worth the investment.

The Saint Clair, MO homeowners’ guide to home security system services

From average costs to expert advice, get all the answers you need to get your job done.