For over 60 years, Post Alarm has built its reputation on solid customer relationships. Every one of these relationships began with a simple phone call or initial inquiry. We value the opportunity to talk with anyone who is interested in learning more about options for protecting their home or business.

If you would like to request an estimate or simply learn more about the benefits of a Post Alarm security system in your home or office, our technician staff would be delighted to speak with you. Contact us by phone at 800-654-7678 or online by using the form on this page. We also welcome your visit to our office in Arcadia, California, where we operate our UL listed Central Station that monitors clients’ alarms 24 hours a day.

Contact Information

Corporate Offices
47 East Saint Joseph Street
Arcadia, CA 91006

Sales Inquiries: (877) 432-9629
Central Station: (800) 654-7678
Local: 626.446.7159
Fax: 626.446.5811


Our team is standing by and ready to help answer any questions you have.

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“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