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Founded by Sam Post over 60 years ago. Post Alarm is a family-run business committed to protecting businesses Southern California.
Complete commercial, home security & alarm monitoring in Los Angeles, Orange County, and SoCal since 1956.
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
“I highly recommend Post Alarm to any homeowner considering an alarm system. The people, service and products are second to none!”
“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.”
“What I love most about Post Alarm is their ability to accommodate our business needs.”
“I’ve been a Post Alarm customer for over 40 years, and have never had a complaint or fault with any of their services.”