Residential Home Security and Services
OUR SERVICES
Residential Security Experts Protecting Your Family
Residential Security Solutions in O’Fallon, St. Louis, St. Charles, and Surrounding Areas
If you’re searching for reliable, affordable, and cutting-edge residential security systems in O’Fallon, St. Louis, St. Charles County, Warrenton County, or nearby communities, St. Louis Alarm Co. is your trusted local expert.
For over a decade, we’ve specialized in custom home security solutions and advanced Information Technology systems designed to protect your family, property, and peace of mind. Every installation is tailored to your unique needs—because no two homes are the same. And with our competitive pricing, you don’t have to compromise between safety and value.
Our Residential Security Services Include:
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Video Surveillance Systems – High-definition cameras for 24/7 monitoring and remote viewing from your phone or computer.
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Garage Door Automation – Convenient, secure access with smart control features.
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Smart A/C Automation – Energy-efficient climate control you can manage from anywhere.
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Automated Lighting – Enhance home safety and reduce energy costs with programmable lighting schedules.
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Fire & Smoke Detection Systems – Early alerts for maximum protection and faster emergency response.
At St. Louis Alarm Co., we’re proud to be a veteran-owned, locally operated security company serving the greater St. Louis region. Whether you need a new security installation, an upgrade to your current system, or integration with smart home technology, our experienced team is ready to help.
Protect your home today—call us at 636-942-5276 or request a free quote online.

LED Touch Screen Alarm

HD DVR Cameras
Home Security, IT, and Networking Solutions for Every Home Size
At St. Louis Alarm Co., we specialize in delivering custom security systems, information technology services, and home networking solutions tailored to fit homes of every size and layout. Whether you live in a small single-family home or a large multi-level residence, our goal is to provide you with the latest technology to keep your family and property safe.
Why Home Security Is No Longer a Luxury
Advancements in modern technology have made residential security solutions more accessible than ever—and they’ve become an essential part of everyday life. With property theft, home break-ins, and burglary incidents on the rise over the past five years, a reliable home security system is no longer optional. It’s a necessity to protect your loved ones and your most valuable possessions.
Unfortunately, many homeowners wait until something happens to a family member or a neighbor before taking action. By then, it may be too late. The truth is, it’s always better to have a security system and never need it than to need it and not have it.
The Basic Function of a Security System
At its core, a home security system is designed to alert you the moment unusual activity is detected in or around your property. It acts as both a warning system and a deterrent, giving you peace of mind whether you’re at home or away.
Key Functions of a Home Security System:
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Intrusion Detection: Triggers an alarm if sensors detect a breach, such as an unexpected door opening or glass breaking.
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Real-Time Alerts: Sends instant notifications to your smartphone or a 24/7 monitoring center so you’re informed anywhere, anytime.
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Deterrence: The visible presence of cameras, alarms, and security signage discourages potential intruders before they act.
From basic alarm systems to advanced setups with HD video surveillance, motion detectors, and smart home automation, today’s home security solutions are built to adapt to your lifestyle—keeping you aware, in control, and ready to respond to any potential threat.
Protect what matters most. Call St. Louis Alarm Co. today at 636-942-5276 or request a free security consultation online
24/7 Monitoring Services
We monitor your home or business 24/7 from our Security Command Center. Our certified central station operators respond to priority signals within 20 seconds or less, on average.
Hold up or panic buttons
In an emergency situation, it’s good to know that help is just a button push away. We can install discrete panic buttons in key locations around your home.
Fire and carbon monoxide
Connected smoke and CO detectors alert you and your monitoring service too, which are directly connected to your alarm panel. These smart detectors do more than just sound an alarm; they send real-time alerts directly to your smartphone. This ensures you’re informed of any potential danger, whether you’re at home or miles away.
By integrating into a comprehensive alarm platform, these detectors offer a seamless connection between your home security and personal devices. This integration provides an extra layer of protection and convenience, allowing you to respond quickly in case of an emergency.
2GIG EDGE Security and Automation Panel
- Industry-first face recognition disarm with a fast and powerful processor delivering amazing rich colors on a brighter and larger screen.
- Sleek, thin design is easy-to-use with updated and intuitive UI providing one button access to smart home functions and home automations.
- Superb audio quality with twice the speakers, double the microphones. Added noise and echo cancellation with two-way communication.
- Integrated Z-Wave Plus 700 V2 (700 series) with the ability to create and execute scenes and schedules, which connect doors, garages, lights and other Z-Wave devices
MANAGE YOUR SMART HOUSE FROM ANYWHERE EASILY
Ways to Control Your Home
Smart Thermostat
Save money, efficiency and energy when you add a smart thermostat to your system.
Create custom schedules and temperature presets that will keep your property at optimal comfort.
Have your thermostat automatically set back when the system is armed away, or pause if smoke or carbon monoxide is detected to limit the circulation of fumes.
Smart Lighting
Save energy and keep your property secure with smart lights.
Set up rules to automatically turn on the entry light whenever you disarm your system and walk through the door.
Create light schedules that make it appear as if you’re at home even when you’re away.
Energy Management
Water Management
Get notified whenever a water leak is detected and turn off the water supply to prevent costly damage – from anywhere.
Irrigation
Take the guesswork out of watering your lawn and stay in control with our integrated irrigation system.
ASKING QUESTIONS
Frequently Asked Questions
By automating your heating/cooling system, lights, and other devices, you can ensure that they’re only running when they need to be, and at the optimal temperature and setting. This can help you save energy and reduce your utility bills.
But the benefits of home automation extend beyond just efficiency. Imagine having the ability to control your locks, lights, and even your garage doors remotely. With smart controls, you can secure your home from anywhere, providing peace of mind and an added layer of security.
Key Benefits of Home Automation:
- Energy Efficiency: Optimize device settings to reduce unnecessary usage, leading to significant savings on utility bills.
- Enhanced Security: Remotely lock doors and monitor cameras to keep your home safe, no matter where you are.
- Convenience: Streamline daily tasks with just a few taps on your smartphone, making life simpler and more convenient.
By integrating these smart solutions, you can transform your home into a secure, efficient haven tailored to your lifestyle.
Not at all! Most home automation systems are designed to be user-friendly and easy to use, with simple interfaces and intuitive controls. Plus, you can control your home’s features from anywhere using your mobile device, computer, Amazon Alexa and Google home voice activated devices
The cost of home automation depends on the devices and features you choose, as well as the complexity of the installation. At STL Alarm Co, we offer customizable home automation services that are designed to meet your needs and budget.
Yes. Most home automation systems use encryption and other security measures to protect your data and prevent unauthorized access. Additionally, you can choose which devices and features to automate, and set up alerts and notifications to stay informed about any activity in your home.
Most home automation systems have backup power supplies or battery backups that can keep the system running during a power outage. Additionally, you can set up alerts and notifications to let you know if there’s a power outage or other issue with your home automation system. Home automation such as lights can be turned on as normal with the wall outlet.
While it’s possible to install some home automation devices yourself, we recommend working with a professional installation company like STL Alarm Co to ensure that your system is installed correctly and works smoothly.
Yes, you will need special equipment for home automation, including sensors, controllers, and other devices that can communicate with your home’s features. However, at STL Alarm Co, we can provide all of the necessary equipment and install and configure it for you, so you don’t have to worry about a thing.
The cost of home automation varies depending on the type and complexity of the system you choose. However, many homeowners find that the benefits of home automation outweigh the cost, and that home automation can actually help them save money on energy bills and other expenses. At STL Alarm Co, we offer affordable and customizable home automation services that can fit any budget.
There are many different types of home automation systems available, depending on your needs and preferences. Some common types of systems include lighting control systems, heating/cooling systems, security systems, garage door openers, and entertainment systems. At STL Alarm Co, we offer a wide range of home automation services and can help you choose the right system for your home.
Home automation can provide a wide range of benefits for homeowners, including increased convenience, energy efficiency, security, and customization. With home automation, you can control your home’s features from anywhere, automate energy usage to save on utility bills, monitor and control access to your home, and customize your system to meet your unique needs and preferences.
Home automation refers to the use of technology to control and automate various features of your home, including lighting, heating/cooling, security systems, and other appliances. With home automation, you can use your phone or other device to remotely control and monitor these features, making your home more convenient, comfortable, and energy-efficient.