Fire Systems

Founded by Sam Post over 60 years ago. Post Alarm is a family-run business committed to protecting our neighborhoods in Southern California.

Complete commercial, home security & alarm monitoring in Los Angeles, Orange County, and SoCal since 1956.


At Post Alarm we take fire protection very seriously and pride ourselves in having some of the most experienced fire protection specialists in the industry on our team.

Our Fire Specialists can design, engineer and install a UL Approved fire detection system that complies with current National Fire Protection Association (NFPA) code standards, as well as state and local fire Authorities requirements. Our Fire Security experts have a good working relationship with your local fire inspectors and will work with all of your involved employees and contractors in the project to ensure that it is done properly and on schedule.

We are also one of the few security companies in the Nation that owns an operates our very own UL Listed Monitoring Station which means we can monitor UL Fire systems. It is a certification we have held for over 20 years and take pride in the training, logistics and maintenance we perform daily to maintain this coveted and rare certification.

With a Post Alarm Fire / Life Safety System, you can take comfort in knowing you have the best system available to protect your property and employees from fire.

“I highly recommend Post Alarm to any homeowner considering an alarm system. The people, service and products are second to none!”

- Brian

“Safety is ultimately up to you. The best you can do is harden the target. That’s what Post Alarm provides. They are a minute away. Post Alarm is a brand known and respected.”

- Glenn

“What I love most about Post Alarm is their ability to accommodate our business needs.”

- Tammy

“I’ve been a Post Alarm customer for over 40 years, and have never had a complaint or fault with any of their services.”

- Robert

Request An Estimate

Our unique security analysis process provides

a personalized plan for your business needs.

  • This field is for validation purposes and should be left unchanged.