Rating: 4.3 / 10 (Average)
2 Customer Reviews - see all comments
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Post Alarm Systems is a home security company for both commercial and <a href="/home-security/best-home-security">residential security systems</a> with more than 60 years in business. The California-based company offers professional installation of their non-proprietary equipment, and 24/7 professional monitoring with zero long-term contracts. They are one of the exclusive dealers of Videofied, which uses motion detectors to send a 10 second video clip to their monitoring centers.

How is Post Alarm Systems rated?


Contract & Price
Technology Integration

Overall Rating: 4.3 / 10 (Average)

Post Alarm Systems has been servicing Southern California's home security needs for more than fifty years. Although the overall quality of their coverage is good, its geographical constraints limit the company's offerings. This, in combination with the cost of purchasing the security equipment, are why we rated it as average.

How does Post Alarm Systems work?

Equipment - 4 / 10

Post Alarm Systems offer standard equipment in their packages: door and window sensors, motion sensors, and a control panel. Add-ons include cameras, environmental monitoring, and life safety features such as medical alerts. The client purchases the hardware, which makes switching between monitoring companies easy, when necessary.
Equipment Manufacturer
Ability to Reallocate System
Wireless Sensors
Control Panel
Event Triggered Siren/ Alarm

Security Monitors, Sensors, & Devices

Intrusion Protection

  • Door & Window Sensors
  • Garage Door Sensors
  • Motion Sensors

Environmental Protection

  • Carbon Monoxide
  • Flood
  • Temperature Change
  • Smoke


  • Indoor Cameras
  • Outdoor Cameras
  • Doorbell Cameras
  • Tilt & Pan Cameras

Life Safety

  • Panic Button
  • Medical Alert


Monitoring - 5 / 10

Post Alarm Systems offers 24/7 professional monitoring from their central station in Southern California, via landline, broadband, or cellular. The company also employs an armed response unit that can be dispatched at their customers' convenience.
Monitoring Options
Professional Monitoring
Monitoring Technology
Number of Monitoring Centers
Monitoring Center Type
Professional Monitoring Services
24/7 Professional Monitoring
Police Dispatch
Fire Department Dispatch
Medical Dispatch

How much does Post Alarm Systems cost?

Contract & Price - 3 / 10

Though they charge on a month-to-month basis, requiring no lengthy contracts, a big concern with Post Alarm Systems is the cost involved with the purchase of security equipment.
Starting Price
Number of Available Packages
Contract Required
Minimum Contract Length
24 months
Cancellation Policy
30-day risk-free cancellation

Contract & Price Fine Print

No cancellation fees for those who don't have contracts

Technology Integrations

Technology Integration - 5 / 10

Post Alarm Systems provides efficient apps for iPhone and Android operating systems, as well as text and email alerts in case of emergency. Some home automation is also available.

Mobile Access & Alerts

  • iPhone App
  • Android App
  • Email & Text Alerts
  • Live Surveillance Feed
  • Remote Arm/Disarm

Home Automation

  • Lighting Control
  • Thermostat Control
  • Appliance Control
  • Event-triggered Automation

Post Alarm Systems Reputation

Reputation - 5 / 10

Post Alarm Systems has good ratings with the Central Station Alarm Association, and the Underwriter's Laboratory, as well as an A+ with the BBB.
BBB Rating
Date Collected
Year Founded

Certifications & Associations

  • Central Station Alarm Association (CSAA)
  • Underwriter's Laboratory (UL)

Contact & Additional Information

Homepage URL
Company Phone
(800) 654-7678
Headquarters Address
47 E Joseph St., Arcadia, CA, 91006
Mailing Address
47 E Joseph St., Arcadia, CA, 91006

Top Rated
Our Partner
9.8 / 10
  • Angie’s List Super Service Award winner 5 years running. Editor's Choice.
  • Wireless hardware - camera, & mobile app options
  • Best reputation in Home Security
  • 30-day free trial & 3-year term
  • Top quality monitoring, from $34.99/mo
  • Equipment as low as $99.95

Latest Post Alarm Systems Reviews

Pasadena, California

Unreliable equipment. Alarm system has malfunctioned/frozen three times in less than 10 months. They are basically closed on weekends. So if you need your system repaired over the weekend, you must pay extra. No 24/7 assistance to help you figure out what's wrong with the system. Go with another company. I plan to cancel my service ASAP.

Rosemead, California

We have used this company for several years. They are professional, prompt and really inexpensive monthly. I've known others who use ADT and all they do is complain about billing, service, etc. I knew someone who had to move for work and because ADT makes you sign a contract they had to pay through the end of the term. This was one of the reasons we chose Post, you buy and own the equipment, and there is no contract. We added Fire monitoring ... just could not be happier with the piece of mind this company has given us.