Los Angeles Security Alarm Systems & 24/7 Monitoring

CSI Security provides professional security alarm installation, UL-listed monitoring, remote video monitoring, access control, and insurance-required fire alarm monitoring throughout Los Angeles County.

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24/7 Los Angeles-Based Customer Support

CSI Security provides professionally installed alarm systems, UL-listed monitoring, remote access, video verification, and local support throughout Los Angeles. Our customers can arm and disarm their systems remotely, receive instant alerts, and speak with a live Los Angeles-based representative whenever assistance is needed.

24/7 UL-Listed Monitoring & Los Angeles-Based Support
Remote Access To Alarms, Cameras & System Status
Customized Security Systems For Homes & Businesses
Local Service, Maintenance & Technical Support
Remote Access & Instant Notifications

(310) 475-3100

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Licensed - Bonded - Insured

Remote Video Monitoring & Alarm Verification

Security works when multiple systems confirm what is happening instead of acting independently. Detection, verification, and response must overlap to reduce false triggers while preserving speed.

Mobile access through Alarm.com

Control your security system remotely through Alarm.com using your smartphone, tablet, or computer.

Alarm Signal Verification

Alarm signals are reviewed and processed in accordance with established procedures to reduce false alarms and improve communication.

Prompt Alarm Notification

Alarm signals are transmitted quickly to our monitoring center, helping ensure timely notification of designated contacts and emergency services when required.

Reduced false alarms

Advanced verification methods help reduce false alarms, improve communication, and minimize unnecessary dispatch requests.

Security Systems With Remote Access & 24/7 Monitoring

CSI Security provides professionally installed security systems with remote access, mobile control, and 24/7 UL-Listed monitoring. Homeowners and businesses can arm, disarm, receive alerts, and manage their systems from virtually anywhere.

Residential Security Systems & Monitoring

Residential protection emphasizes real-time alerts, mobile visibility, and consistent performance across entry points, interior zones, and outdoor areas.

Commercial Security Systems & UL Monitoring

Business systems separate public access, employee movement, and restricted zones while maintaining centralized monitoring and reporting.

Alarm Installation

Installation includes placement validation, communication testing, and live monitoring confirmation before systems are activated.

UL-Listed 24/7 Alarm Monitoring

Professional monitoring ensures alarms are observed continuously, evaluated accurately, and escalated using structured response logic.

Fire & Burglar Alarm Systems

Professional fire and burglar alarm systems with 24/7 monitoring, mobile alerts, and rapid emergency response.

Smart Alarm Integration

Control your security system from anywhere using the Alarm mobile app. Arm, disarm, receive alerts, and view activity in real time.

Get smart security systems installed by industry experts. Get your customized quote now.

24/7 Security Monitoring

Video Monitoring allows owners and managers to verify activity in real time, whether checking a storefront after hours or reviewing movement inside a facility during off-peak periods.

CSI Security provides UL-listed 24/7 alarm monitoring with professional operators who verify alarms and dispatch emergency responders when needed.

Access control systems define who enters, when access occurs, and where restrictions apply, reducing internal risk while maintaining operational flow. Energy and hazard monitoring extend protection beyond intrusion by identifying environmental risks before damage escalates.

Access control systems define who enters, when access occurs, and where restrictions apply, reducing internal risk while maintaining. Extend protection beyond intrusion by identifying environmental risks before damage escalates.

In Los Angeles properties where mixed-use spaces and extended operating hours are common, visibility and remote control are often more valuable than alarms alone.

(310) 475-3100

CSI Security as your Partner

Since 1982, CSI Security has provided professionally installed security systems, UL-listed monitoring, and Los Angeles-based customer support for homes and businesses throughout Southern California.

Continuous Monitoring

Professional operators monitor alarm signals 24/7 and respond quickly when emergencies occur.

Coordinated Response

Alarm verification helps reduce false alarms and improves emergency response times.

Remote Control

Arm and disarm your system, view cameras, receive alerts, and manage users from anywhere using the Alarm.com app.

Preventive Care

Our team helps identify communication issues and system problems before they affect monitoring performance.

Serving Los Angeles Since 1982

44+ Years Experience

UL Central Station Monitoring

24/7 Los Angeles-Based Customer Support

Same-Day Service Available

Insurance-Required Fire Alarm Monitoring

Serving Los Angeles Since 1982

44+ Years Experience

UL Central Station Monitoring

24/7 Los Angeles-Based Customer Support

Same-Day Service Available

Insurance-Required Fire Alarm Monitoring

4.9 Star Rating

100+ Google Reviews

Trusted by Los Angeles Homeowners & Businesses Since 1982

• Over 100 Five-Star Reviews • 44+ Years of Experience • 24/7 Los Angeles-Based Customer Support

    
 
 
       Posted on Google  
   
   jaehee yen 
 
 
 
 Trustindex verifies that the original source of the review is Google. CSI is the most caring security service company I can imagine. All the team members make you feel like family. They really care about you. I'm so glad I upgraded my entire security system with them and feel safe and secure. Highly recommended.
  
 
      Posted on Google  
   
   Anastasia Konkina 
 
 
 
 Trustindex verifies that the original source of the review is Google. CSI customer service is impeccable!
Fast response to any problem that might arise.
  
 
      Posted on Google  
   
   Stuart Esner 
 
 
 
 Trustindex verifies that the original source of the review is Google. I can't speak highly enough about Alex and the entire CSI team.  Our insurance required installation of additional equipment.  CSI worked quickly and professionally to help satisfy the insurer's requirements with minimal stress and prompt service.
  
 
      Posted on Google  
   
   Steven Durbahn 
 
 
 
 Trustindex verifies that the original source of the review is Google. CSI security was very responsive after discovering 2 sensors were placed where the summer window screen needed to go. They sent a great tech named Erix, who was professional, speedy, thorough and most importantly - polite and friendly! It probably helped that he recently moved to LA from the Midwest. Hopefully he’ll keep his personable and friendly personality! Thank you so much!
  
 
      Posted on Google  
   
   terry storch 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional. Erix made sure to answer all my questions
  
 
      Posted on Google  
   
   Paige Lapinski 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service. Erix came out to fix an issue with our system. He was timely, got the job done quickly and made some great suggestions.
  
 
      Posted on Google  
   
   Nina Sussman 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have been a client of CSI Security for years, and I'm extremely happy w/them. They are easy to get hold of if & when I need them,& the level of service is always great. I like everyone who works there,& would definitely recommend them.
  
 
      Posted on Google  
   
   David Guyette 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fast response time to fix control panel
  
 
      Posted on Google  
   
   Allison Sampson 
 
 
 
 Trustindex verifies that the original source of the review is Google. On time
Professional
Positive
  
 
      Posted on Google  
   
   Pamela Thompson 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had a problem with one of our smoke/CO alarms and Erix, the CSI technician, fixed it the same day the problem started. He was just terrific, not only in fixing the problem, but in explaining the cause and future prevention. He was polite and a delight to work with. I highly recommend CSI and their staff.

Frequently asked questions

Our fully integrated security systems keep you in control anytime you want with remote access.

How does 24/7 monitoring differ from basic alarm notifications?

Professional monitoring ensures alarms are actively observed, evaluated, and escalated even when property owners are unavailable, reducing response delays caused by missed alerts or device limitations.

What role does video surveillance play beyond recording incidents?

Live and recorded video allows immediate verification of activity, helping determine whether alerts require escalation while supporting investigations and operational oversight.

How does access control reduce internal security risks?

Access control limits entry based on time, role, and location, creating accountability while preventing unauthorized movement without disrupting daily operations.

Why is proactive maintenance important for security systems?

Over time, sensors, batteries, and communication links degrade. Proactive maintenance identifies failures before alerts are missed or false alarms increase.

Can environmental hazards be monitored alongside intrusion alerts?

Integrated hazard monitoring detects carbon monoxide levels, water leaks, and flooding conditions, expanding protection beyond theft or intrusion.

Get 24/7 Surveillance in Los Angeles With CSI Security

Control, monitoring, and response should remain accessible at all times.

(310) 475-3100

Call Now

Emal Address

info@csisecurity.net