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    Verified home security system services reviews

Find Home security system pros in Placentia

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
3653 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


Avatar for Harmony Electrical, Plumbing and Air

Harmony Electrical, Plumbing and Air

11121 First Ave
5.00(
13
)
Approved Pro

Harmony Electrical, Plumbing and Air

11121 First Ave
5.00(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1421 local quotes requested

Harmony Electrical, Plumbing and Air is dedicated to delivering exceptional electrical, plumbing and Air services tailored to meet the unique needs of each client. Our mission is to ensure reliability and quality through customized solutions, supported by a team of highly skilled and experienced technicians who are always prepared to provide outstanding service. We are committed to your satisfaction and will not consider the job complete until it meets our high standards. Our pride lies in the quality of our work and our commitment to excellent customer service. Explore the range of services we offer below, and feel free to call or click to schedule your free estimate today!

"Very good company, great service and always on top of everything would highly recommend to anyone!!"

Lauren D on October 2025

Harmony Electrical, Plumbing and Air is dedicated to delivering exceptional electrical, plumbing and Air services tailored to meet the unique needs of each client. Our mission is to ensure reliability and quality through customized solutions, supported by a team of highly skilled and experienced technicians who are always prepared to provide outstanding service. We are committed to your satisfaction and will not consider the job complete until it meets our high standards. Our pride lies in the quality of our work and our commitment to excellent customer service. Explore the range of services we offer below, and feel free to call or click to schedule your free estimate today!

"Very good company, great service and always on top of everything would highly recommend to anyone!!"

Lauren D on October 2025


Avatar for B.K. Electric Services

B.K. Electric Services

14320 Ventura Blvd
4.34(
122
)
Approved Pro

B.K. Electric Services

14320 Ventura Blvd
4.34(
122
)
Approved Pro
Customers say: Quality work
662 local quotes requested
21 years of experience

Welcome to B.K. Electric Services Inc, Licensed Los Angeles Electricians. Honest,reliable, professional electricians, where superb customer service, competitive prices and most importantly friendly services is our #1 Priority! We provide Residential, Commercial and Industrial electrical services all over the Los Angeles, Orange County and San Fernando Valley areas. Our company has become a household name around the Los Angeles area. We have built many relationships with our residential customers, celebrities, public figures, small retailers and large department stores. We work closely with DWP, Edison and the Department of Building and safety to ensure that your work is being done up to the city codes. From the estimate to pulling the permits we will handle everything for your electrical project from A-Z. We offer absolutely free estimates always! Additional phone number - (310) 430-2300. Additional DBAs - B K Electric Services, B K Electric Services Inc, BK Electric Service, BK Electric Services. Family owned & operated

"Took a long time and they weren't able to do the other job and will need to contact again"

Sharyn C on October 2025

Welcome to B.K. Electric Services Inc, Licensed Los Angeles Electricians. Honest,reliable, professional electricians, where superb customer service, competitive prices and most importantly friendly services is our #1 Priority! We provide Residential, Commercial and Industrial electrical services all over the Los Angeles, Orange County and San Fernando Valley areas. Our company has become a household name around the Los Angeles area. We have built many relationships with our residential customers, celebrities, public figures, small retailers and large department stores. We work closely with DWP, Edison and the Department of Building and safety to ensure that your work is being done up to the city codes. From the estimate to pulling the permits we will handle everything for your electrical project from A-Z. We offer absolutely free estimates always! Additional phone number - (310) 430-2300. Additional DBAs - B K Electric Services, B K Electric Services Inc, BK Electric Service, BK Electric Services. Family owned & operated

"Took a long time and they weren't able to do the other job and will need to contact again"

Sharyn C on October 2025


Avatar for SafeStreets - ADT Authorized Provider

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
291
)
Approved Pro

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
291
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
62 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

"I regret ever choosing SafeStreets. The whole process was frustrating from the start. The technician who came to install the system was late, didn’t answer my questions properly, and left my house a mess. When I reached out to customer service, I was put on hold for over an hour, only to get a half-baked answer. Save yourself the trouble and look elsewhere."

Jessica S 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

"I regret ever choosing SafeStreets. The whole process was frustrating from the start. The technician who came to install the system was late, didn’t answer my questions properly, and left my house a mess. When I reached out to customer service, I was put on hold for over an hour, only to get a half-baked answer. Save yourself the trouble and look elsewhere."

Jessica S on October 2025


"I highly recommend this business. He resolved my issue with great efficiently. He was very knowledgeable and personable. He listened to my concerns and offered comprehensive resolutions. I couldn't have chosen a better business. He was the perfect choice. I'm very satisfied and highly recommend this business."

Terry M on September 2025

Any residential, commercial, repairs or add-ons, Fair prices, dead-line always a must, owner-operated 20 years experience

"I highly recommend this business. He resolved my issue with great efficiently. He was very knowledgeable and personable. He listened to my concerns and offered comprehensive resolutions. I couldn't have chosen a better business. He was the perfect choice. I'm very satisfied and highly recommend this business."

Terry M on September 2025


Avatar for Its Showtime Inc

Its Showtime Inc

4345 E La Cara St
5.00(
15
)
Approved Pro

Its Showtime Inc

4345 E La Cara St
5.00(
15
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
106 local quotes requested

Its Showtime Inc has been in business since 1999 and specializes in making complex audio and video system easy to use. From the simplist living room system to the most complex bar or restaurant system we can make the system not only look clean but give you the ability to work it with ease.

"Amazing. These guys are the best. I have used them several times and I refer them often"

Landon P on October 2024

Its Showtime Inc has been in business since 1999 and specializes in making complex audio and video system easy to use. From the simplist living room system to the most complex bar or restaurant system we can make the system not only look clean but give you the ability to work it with ease.

"Amazing. These guys are the best. I have used them several times and I refer them often"

Landon P on October 2024


Avatar for BORIS BETOEI FIRE PROTECTION

BORIS BETOEI FIRE PROTECTION

1016 WINCHESTER AVE #19
5.00(
5
)
Approved Pro

BORIS BETOEI FIRE PROTECTION

1016 WINCHESTER AVE #19
5.00(
5
)
Approved Pro
Customers say: Quick response
17 local quotes requested
15 years of experience

Boris Betoei Fire Protection is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"Work done quickly and at reasonable price."

Ryna A on July 2025

Boris Betoei Fire Protection is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"Work done quickly and at reasonable price."

Ryna A on July 2025


Avatar for TCI Engineered Systems

TCI Engineered Systems

2300 Walnut Avenue, Suite C
4.98(
64
)
Approved Pro

TCI Engineered Systems

2300 Walnut Avenue, Suite C
4.98(
64
)
Approved Pro
Customers say: True professional
13 years of experience
Free onsite estimate

With over 10 years of continued success in commercial & Industrial security—and a solid “5-Star” Yelp rating, we are the experts you need to secure your property. TCI provides and installs high-quality security cameras that are completely customizable to fit your needs. With an incredible attention to detail and factory direct pricing, we guarantee 100% satisfaction. Give us a call today. We look forward to working with you.

"Everything was quickly and correctly"

Dan S on October 2025

With over 10 years of continued success in commercial & Industrial security—and a solid “5-Star” Yelp rating, we are the experts you need to secure your property. TCI provides and installs high-quality security cameras that are completely customizable to fit your needs. With an incredible attention to detail and factory direct pricing, we guarantee 100% satisfaction. Give us a call today. We look forward to working with you.

"Everything was quickly and correctly"

Dan S on October 2025


Avatar for Legion Fire Protection

Legion Fire Protection

2101 W. Crescent Ave. Suite M
5.00(
2
)
Approved Pro

Legion Fire Protection

2101 W. Crescent Ave. Suite M
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

Legion Fire Protection is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. 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.

"Great customer service, works really fast."

Michale M on December 2021

Legion Fire Protection is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. 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.

"Great customer service, works really fast."

Michale M on December 2021


Avatar for Resource One Low Voltage Security, Inc.

Resource One Low Voltage Security, Inc.

8464 Ditmar Drive
4.95(
21
)
Approved Pro

Resource One Low Voltage Security, Inc.

8464 Ditmar Drive
4.95(
21
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
9 years of experience

We specialize in Low Voltage Surveillance Security Cameras. We are committed to the highest quality work, and promise expert professionalism, and respect. We have over 17 years of industry experience can do just about anything to do with Low Voltage work. We pride ourselves in promptness, and efficiency. Call now to book an appointment with one of our well trained installers today! Satisfaction Guaranteed!

"On time service. Delivered what he promised and went out his way to keep me happy. He is the best and I highly recommend him to anyone."

Harry K on September 2020

We specialize in Low Voltage Surveillance Security Cameras. We are committed to the highest quality work, and promise expert professionalism, and respect. We have over 17 years of industry experience can do just about anything to do with Low Voltage work. We pride ourselves in promptness, and efficiency. Call now to book an appointment with one of our well trained installers today! Satisfaction Guaranteed!

"On time service. Delivered what he promised and went out his way to keep me happy. He is the best and I highly recommend him to anyone."

Harry K on September 2020

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Home Security Systems questions, answered by experts

Costs depend on system type, labor rates, and additional features like smart integration or professional monitoring.

You likely can reset your house alarm without the code, but it depends on many factors like how it’s wired and whether or not there’s a default reset code. Most companies make bypassing a security alarm without entering your code challenging to prevent burglars from simply resetting the alarm during a break-in. Your best bet is to contact your alarm company directly to get specialized support for your situation. 

But, while you wait for support, you can disconnect it from the power source to stop the alarm from going off.

While many security cameras are internet-connected, not all require a constant connection. Some wireless options operate independently of the internet, providing essential security functions even offline. They typically have features like local storage capabilities, like microSD cards or network-attached storage (NAS), which can still record footage even when Wi-Fi is unavailable. The camera-stored data can be accessed later once the Wi-Fi connection is restored.

A deadbolt is one of the most secure locks you can install on your front door, so it is better in terms of home security than other types of locks. While deadbolts are typically more expensive than a regular lock, they’re still quite cost-effective and provide an additional layer of security that may even deter some intruders.

It's recommended that you have an upload speed of at least 10 megabits per second (Mpbs) in order to use a wireless security camera.

The Placentia, CA homeowners’ guide to home security system services

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