HM Security

Nobody has more ways to help protect what matters most.

Schedule a Call Today!

We’re honored to have received the 2022 ADT Customer Satisfaction Award for the second year in a row. We take pride in every home we help to protect, and achieved this award based on our best-in-class customer service and commitment to the ADT brand. Thank you to all of our customers for helping us achieve this award!*

*Based on independent 2020-21 customer surveys. Customers are surveyed with one question following installation of an ADT-monitored security system

Customize Your Protection


Before it becomes part of your security system monitored by ADT, engineers test our products under some of the most difficult conditions to make sure they’ll perform in real-life scenarios when your health and safety may be at stake.

Plans & Packages

With ADT-monitored home security packages, you get more than just a smart security system. You get peace of mind from knowing there are more than 17,000 people across the United States helping to protect what you value most in your life.

Why Us

We want you to feel peace of mind, whether you’re at home or on the go. With so many parts of our lives changing there are also threats to our security that are changing. HM Security is adding even more ways to help you and your loved ones stay protected.

Professional Installation

Our highly trained and skilled technicians are ready to protect your home or business. Call at 800-377-4082.

to get your free quote.

How to Get Started


Give us a call

Call us at 800-377-4082 to get a free quote.


Customize your system

In the call we will customize a system to fit your needs.


Schedule your installation

Pick a time that works for you. HM Security will send a professional technician to get your system installed.

About Us

HM Security Inc. is an ADT Authorized Dealer (LIC 8066019) that covers the [Los Angeles County] area and has been in business for over 10 years. We are located at: 11455 Paramount Blvd Suite H, Downey, CA 90241. Our phone number is: (800) 377-4082. We take pride in delivering world-class customer service and providing our clients with the perfect security system to match their needs.

What Our Customers Say

Rey gave us a great deal not only that, great service as well. Very helpful. I would 100% recommend them to family members and other businesses, to anybody really looking to set up a security system I’d send them over their way. Our home and business are now hooked up with a great security system giving us a peace of mind and at a great price! Thank you Rey.
– Sahara Angeles
So someone tried breaking into my business the other day I had an alarm system that was installed a long time ago and it didn’t work when I needed it most. I found HM security online gave them a call they came over the following day gave me a great deal for both my home and my business, now I’m protected and feel a lot safer. Highly recommend them.
– Kandyshop Bikinis
Rey and his team helped us tremendously. We own a small tire shop, and, on December 27th, 5 thieves broke into our shop and took everything from computers to Philips screw driver. That's when we reached out to HM Security because they were a lot cheaper than the ADT Corporate.  I would recommend this dealer to my friends and family. Thanks!
– JC Tires