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NAICS 561621 · Security Systems Services (except Locksmiths)

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Security systems in Monrovia, CA

Security systems in Monrovia, CA; 408 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. All Protection Services

    ActiveAlarm Company Operator

    Monrovia, CA

    Ask it
    Proof for All Protection Services
    License
    US-CA-DCA BSIS-ACO-5419
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Mar 31, 2028
    Checked
    Oct 23, 2026
    Where
    Monrovia, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  2. Financial Technology Solutions International Inc.

    ActiveAlarm Company Operator

    Monrovia, CA

    Ask it
    Proof for Financial Technology Solutions International Inc.
    License
    US-CA-DCA BSIS-ACO-8158
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Sep 30, 2028
    Checked
    Oct 23, 2026
    Where
    Monrovia, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  3. G W Systems

    ActiveAlarm Company Operator

    Monrovia, CA

    Ask it
    Proof for G W Systems
    License
    US-CA-DCA BSIS-ACO-6641
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2028
    Checked
    Oct 23, 2026
    Where
    Monrovia, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  4. USA Alarm Systems, Inc

    ActiveAlarm Company Operator

    Monrovia, CA

    Ask it
    Proof for USA Alarm Systems, Inc
    License
    US-CA-DCA BSIS-ACO-4235
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    May 31, 2027
    Checked
    Oct 23, 2026
    Where
    Monrovia, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  5. Alarm Connection Plus, Inc.

    ActiveAlarm Company Operator

    Duarte, CA · 2 mi away

    Ask it
    Proof for Alarm Connection Plus, Inc.
    License
    US-CA-DCA BSIS-ACO-6667
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Dec 31, 2026
    Checked
    Oct 23, 2026
    Where
    Duarte, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  6. Coast Line

    ActiveAlarm Company Operator

    Irwindale, CA · 5 mi away

    Ask it
    Proof for Coast Line
    License
    US-CA-DCA BSIS-ACO-7622
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Sep 30, 2028
    Checked
    Oct 23, 2026
    Where
    Irwindale, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  7. Post Alarm Systems

    ActiveAlarm Company Operator

    Arcadia, CA · 3 mi away

    Ask it
    Proof for Post Alarm Systems
    License
    US-CA-DCA BSIS-ACO-1843
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jun 30, 2027
    Checked
    Oct 23, 2026
    Where
    Arcadia, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  8. Post Alarm Systems

    ActivePrivate Patrol Operator+2

    Arcadia, CA · 3 mi away

    Ask it
    Proof for Post Alarm Systems
    License
    US-CA-DCA BSIS-PPO-10170
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Private Patrol Operator; PPO Branch; Alarm Company Branch
    Expires
    Feb 28, 2027
    Checked
    Oct 23, 2026
    Where
    Arcadia, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  9. Rutherford Systems

    ActiveAlarm Company Operator

    Duarte, CA · 2 mi away

    Ask it
    Proof for Rutherford Systems
    License
    US-CA-DCA BSIS-ACO-7745
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Mar 31, 2028
    Checked
    Oct 23, 2026
    Where
    Duarte, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  10. Diversified Alarm Services Inc

    ActivePrivate motor carrier

    San Gabriel, CA · 8 mi away

    CallAsk it
    Proof for Diversified Alarm Services Inc
    USDOT registration
    US-DOT 2761375
    Issuer
    US-DOT
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    San Gabriel, CA · serves California
    Phone
    (323) 980-9528
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-DOT record

  11. Diversified Alarm Services, Inc.

    ActiveCorporation registered in SAM.gov

    San Gabriel, CA · 8 mi away

    Ask it
    Proof for Diversified Alarm Services, Inc.
    SAM.gov registration
    US-GSA-SAM Z3AKPAYURNC2
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jul 22, 2027
    Checked
    Oct 23, 2026
    Where
    San Gabriel, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  12. Redmann, Thomas, La Cctv Supply

    ActiveSole proprietorship registered in SAM.gov

    La Puente, CA · 10 mi away

    Ask it
    Proof for Redmann, Thomas, La Cctv Supply
    SAM.gov registration
    US-GSA-SAM SWMPRZZCNVK4
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Sole proprietorship registered in SAM.gov
    Expires
    May 21, 2027
    Checked
    Oct 23, 2026
    Where
    La Puente, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  13. 24Hr Secured

    ActiveAlarm Company Operator

    Glendora, CA · 8 mi away

    Ask it
    Proof for 24Hr Secured
    License
    US-CA-DCA BSIS-ACO-5657
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Nov 30, 2027
    Checked
    Oct 23, 2026
    Where
    Glendora, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  14. A & G Security Inc

    ActiveAlarm Company Operator

    El Monte, CA · 7 mi away

    Ask it
    Proof for A & G Security Inc
    License
    US-CA-DCA BSIS-ACO-4285
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2027
    Checked
    Oct 23, 2026
    Where
    El Monte, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  15. Access Tech Security

    ActiveAlarm Company Operator

    Pasadena, CA · 8 mi away

    Ask it
    Proof for Access Tech Security
    License
    US-CA-DCA BSIS-ACO-8255
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jan 31, 2028
    Checked
    Oct 23, 2026
    Where
    Pasadena, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  16. Advance Alarm

    ActiveAlarm Company Operator

    El Monte, CA · 7 mi away

    Ask it
    Proof for Advance Alarm
    License
    US-CA-DCA BSIS-ACO-3605
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    May 31, 2027
    Checked
    Oct 23, 2026
    Where
    El Monte, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  17. Alltime Security Alarm Engineering

    ActiveAlarm Company Operator

    Alhambra, CA · 10 mi away

    Ask it
    Proof for Alltime Security Alarm Engineering
    License
    US-CA-DCA BSIS-ACO-4387
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    May 31, 2028
    Checked
    Oct 23, 2026
    Where
    Alhambra, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  18. Am-Tec Total Security

    ActiveAlarm Company Operator

    Chino, CA · 9 mi away

    Ask it
    Proof for Am-Tec Total Security
    License
    US-CA-DCA BSIS-ACO-4498
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2027
    Checked
    Oct 23, 2026
    Where
    Chino, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  19. American Central Alarm of Pasadena Inc

    ActiveAlarm Company Operator

    Pasadena, CA · 8 mi away

    Ask it
    Proof for American Central Alarm of Pasadena Inc
    License
    US-CA-DCA BSIS-ACO-6062
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jul 31, 2028
    Checked
    Oct 23, 2026
    Where
    Pasadena, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

  20. American Dynamic Services, Inc.

    ActiveAlarm Company Operator

    San Marino, CA · 8 mi away

    Ask it
    Proof for American Dynamic Services, Inc.
    License
    US-CA-DCA BSIS-ACO-6335
    Issuer
    US-CA-DCA
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jul 31, 2028
    Checked
    Oct 23, 2026
    Where
    San Marino, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-CA-DCA record

More cities in California

Livermore 82San Diego 51Sacramento 43Los Angeles 42Fresno 38San Jose 36Anaheim 23Bakersfield 23San Francisco 23Irvine 20Riverside 20Simi Valley 16El Cajon 15Stockton 15Corona 14Huntington Beach 14

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