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    Verified home security system services reviews

Find Home security system pros in Thornton

Avatar for ADT

ADT

3750 Priority Way South Dr
4.53(
734
)
Approved Pro

ADT

3750 Priority Way South Dr
4.53(
734
)
Approved Pro
Customers say: Terrific value
3664 local quotes requested
151 years of experience

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."

Luke W on October 2025

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."

Luke W on October 2025


"Made the project at 1am and by 10am the next morning it was totally taken care of. Fast, professional, knowledgeable, and fairly priced."

Michelle L on November 2024

We are a dealer and installer of Camera Systems, Alarm Systems, Alarm Monitoring, Access Control, Audio/Visual, and so much more.

"Made the project at 1am and by 10am the next morning it was totally taken care of. Fast, professional, knowledgeable, and fairly priced."

Michelle L on November 2024


Avatar for SafeStreets - ADT Authorized Provider

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
292
)
Approved Pro

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
292
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
61 local quotes requested

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"connected with safestreets to get home security setup. it’s been fine. have used many other services before but this one seems like it will fit our needs best."

Cheri O on October 2025

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"connected with safestreets to get home security setup. it’s been fine. have used many other services before but this one seems like it will fit our needs best."

Cheri O on October 2025


Avatar for Secure It Controls

Secure It Controls

9488 County Rd 80
5.00(
1
)
Approved Pro

Secure It Controls

9488 County Rd 80
5.00(
1
)
Approved Pro
10 years of experience
Free onsite estimate

Secure It Controls is Northern Colorado’s trusted provider of professional security solutions for residential and commercial properties. We specialize in access control systems, camera surveillance, burglar alarms, and intercom systems, delivering tailored solutions to meet your unique needs. Our experienced team focuses on quality, reliability, and innovation, ensuring every installation is seamless and effective. From managing access to safeguarding your property, we use the latest technology to provide peace of mind. Trust Secure It Controls to protect what matters most. Contact us today to learn more!

Secure It Controls is Northern Colorado’s trusted provider of professional security solutions for residential and commercial properties. We specialize in access control systems, camera surveillance, burglar alarms, and intercom systems, delivering tailored solutions to meet your unique needs. Our experienced team focuses on quality, reliability, and innovation, ensuring every installation is seamless and effective. From managing access to safeguarding your property, we use the latest technology to provide peace of mind. Trust Secure It Controls to protect what matters most. Contact us today to learn more!


Avatar for FlatironsAV LLC

FlatironsAV LLC

2770 Arapahoe Rd Ste 132 - 707
5.00(
8
)
Approved Pro

FlatironsAV LLC

2770 Arapahoe Rd Ste 132 - 707
5.00(
8
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

Flatirons AV specializes in providing comprehensive low voltage services, including rough-in wiring, meticulous finishing, and thorough setup and support for premium low voltage systems. Our commitment extends beyond mere service; we prioritize a personal, communicative, and service-oriented approach tailored specifically to builders and their clients. We also excel in customizing solutions to perfectly match the unique requirements of each family. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. www.flatironsav.com Paypal, Venmo, Zelle, Cash, Check Accepted for Payment

"Knowledgeable Honest Resourceful Professional and Prompt"

Sally H on December 2024

Flatirons AV specializes in providing comprehensive low voltage services, including rough-in wiring, meticulous finishing, and thorough setup and support for premium low voltage systems. Our commitment extends beyond mere service; we prioritize a personal, communicative, and service-oriented approach tailored specifically to builders and their clients. We also excel in customizing solutions to perfectly match the unique requirements of each family. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. www.flatironsav.com Paypal, Venmo, Zelle, Cash, Check Accepted for Payment

"Knowledgeable Honest Resourceful Professional and Prompt"

Sally H on December 2024


Avatar for Fitch Services, LLC

Fitch Services, LLC

1245 Brighton Drive
4.92(
6
)
Approved Pro

Fitch Services, LLC

1245 Brighton Drive
4.92(
6
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Brent and his team repair a sliding door and sliding screen door which were not operating correctly including some wooden trim on the sliding door. They also caulked all doors and windows at our house. They were not weatherized by the builder. The work looked great and the doors now slide with ease."

Michael P on April 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Brent and his team repair a sliding door and sliding screen door which were not operating correctly including some wooden trim on the sliding door. They also caulked all doors and windows at our house. They were not weatherized by the builder. The work looked great and the doors now slide with ease."

Michael P on April 2025


Monitex Security, Inc.

670 Myrtle Avenue, Suite 6342
New on AngiNew on Angi
Approved Pro

Monitex Security, Inc.

670 Myrtle Avenue, Suite 6342
New on AngiNew on Angi
Approved Pro
8 years of experience
Free onsite estimate

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. We are 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.

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. We are 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.


Avatar for North American Alarm

North American Alarm

8714 75th Way
5.00(
24
)
Approved Pro

North American Alarm

8714 75th Way
5.00(
24
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
28 years of experience

With 26 years of experience in installing and monitoring Security systems as well as installing surveillance cameras, we work hard to bring each customer the best possible service and quality available at a reasonable cost and a low monthly Alarm Monitoring Fee. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Although they don’t advertise widely, I was happy to find out about North American Alarm through a home sale. They have been fantastic since that time. Both Mike and Matt provided superior service. They are responsive and professional. I always feel like I’m getting the highest quality service for the best price of it. And it helps to know that I am working with a locally owned company."

Jeremy S on June 2025

With 26 years of experience in installing and monitoring Security systems as well as installing surveillance cameras, we work hard to bring each customer the best possible service and quality available at a reasonable cost and a low monthly Alarm Monitoring Fee. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Although they don’t advertise widely, I was happy to find out about North American Alarm through a home sale. They have been fantastic since that time. Both Mike and Matt provided superior service. They are responsive and professional. I always feel like I’m getting the highest quality service for the best price of it. And it helps to know that I am working with a locally owned company."

Jeremy S on June 2025


Avatar for Services Butler

Services Butler

68 Beacon St
5.00(
1
)
Approved Pro

Services Butler

68 Beacon St
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

We specialize in residential and Monitored Security & Automation. Options include: Remote Monitoring | Indoor & Outdoor Cameras | Camera Doorbells | Smart Locks. Our 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.

"Extremely efficient and professional!"

Mark K on June 2021

We specialize in residential and Monitored Security & Automation. Options include: Remote Monitoring | Indoor & Outdoor Cameras | Camera Doorbells | Smart Locks. Our 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.

"Extremely efficient and professional!"

Mark K on June 2021


Alarms & Security Cameras, LLC

14201 E 4th Avenue, Suite 320
4.83(
3
)
Approved Pro

Alarms & Security Cameras, LLC

14201 E 4th Avenue, Suite 320
4.83(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed.

"Always very professional, always a job well done and 100% satisfied."

Carlo C on August 2021

Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed.

"Always very professional, always a job well done and 100% satisfied."

Carlo C on August 2021

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Home Security Systems questions, answered by experts

Grounding is a great first step to prevent electrical shock, but you can take it further with GFCI outlets and AFCIs (arc fault circuit interrupters). In particular, AFCIs help protect against the type of electrical arcs that cause fires, like if a mouse chews on a wire or your laptop starts overheating at the wall. These are required in some areas of your home.

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. 

This is the topic of much debate, though there is no “better,” as it depends on personal preferences. Some of the components of a wireless system keep working when the power goes out, as they are battery-powered. On the other hand, a wireless system typically connects to your modem and router. Wired systems use landlines to communicate, which never go out on their own unless they’re physically cut.

The main difference between different security sensor options is the type of motion each detects. A motion detector monitors obvious movements in hallways, entrances, and exits. On the other hand, a presence detector is more sensitive and captures smaller moves. A window sensor typically focuses on the opening and closing of the window, whereas a glass break sensor alarms you when a glass is broken.

Wireless cameras will not work without an internet connection. A Wi-Fi camera uses the internet to transmit footage and store the information in cloud-based software. However, there are wireless cameras that you can buy that allow you to record and save footage on an SD card instead.

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