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NAICS 561621 · Security Systems Services (except Locksmiths)

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Security systems in Downey, CA

15 security systems in Downey, CA; 713 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. Bersa Security Solutions Inc.

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for Bersa Security Solutions Inc.
    License
    DCA BSIS-ACO-7554
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Nov 30, 2027
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 7554 → California Department of Consumer Affairs search

  2. Electro Secure Systems

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for Electro Secure Systems
    License
    DCA BSIS-ACO-6222
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Aug 31, 2027
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 6222 → California Department of Consumer Affairs search

  3. Hm Security Inc

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for Hm Security Inc
    License
    DCA BSIS-ACO-6796
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Oct 31, 2027
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 6796 → California Department of Consumer Affairs search

  4. Hss Electronic Security LLC

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for Hss Electronic Security LLC
    License
    DCA BSIS-ACO-7968
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Nov 30, 2026
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 7968 → California Department of Consumer Affairs search

  5. Nutech Fire Alarm and Security

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for Nutech Fire Alarm and Security
    License
    DCA BSIS-ACO-6713
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Apr 30, 2027
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 6713 → California Department of Consumer Affairs search

  6. Sky Security, Inc

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for Sky Security, Inc
    License
    DCA BSIS-ACO-6765
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Aug 31, 2027
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 6765 → California Department of Consumer Affairs search

  7. Skyline Security Management Inc

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for Skyline Security Management Inc
    License
    DCA BSIS-ACO-6480
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jun 30, 2027
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 6480 → California Department of Consumer Affairs search

  8. System Innovations, Inc.

    ActiveAlarm Company Operator

    Downey, CA

    Ask it
    Proof for System Innovations, Inc.
    License
    DCA BSIS-ACO-8292
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jun 30, 2028
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 8292 → California Department of Consumer Affairs search

  9. Tdm Networks

    ActiveSole proprietorship registered in SAM.gov

    Downey, CA

    Ask it
    Proof for Tdm Networks
    SAM.gov registration
    SAM.gov QAARUEHT4PC5
    Issuer
    SAM.gov
    Status
    Active
    Class
    Sole proprietorship registered in SAM.gov
    Expires
    Jul 6, 2027
    Checked
    Oct 23, 2026
    Where
    Downey, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  10. Boxer Alarm

    Security systems

    Downey, CA

    CallAsk it
    Proof for Boxer Alarm
    Where
    Downey, CA · serves California
    Phone
    (562) 682-6801
    Listing
    Built from public records. Not claimed yet, so call them directly.

  11. Cronoteq Security

    Security systems

    Downey, CA

    CallAsk it
    Proof for Cronoteq Security
    Where
    Downey, CA · serves California
    Phone
    (562) 331-2898
    Listing
    Built from public records. Not claimed yet, so call them directly.

  12. HM Security - ADT Authorized Dealer

    Security systems

    Downey, CA

    CallAsk it
    Proof for HM Security - ADT Authorized Dealer
    Where
    Downey, CA · serves California
    Phone
    (800) 377-4082
    Listing
    Built from public records. Not claimed yet, so call them directly.

  13. HSS Hi-Tech Security Solutions

    Security systems

    Downey, CA

    CallAsk it
    Proof for HSS Hi-Tech Security Solutions
    Where
    Downey, CA · serves California
    Phone
    (562) 923-1234
    Listing
    Built from public records. Not claimed yet, so call them directly.

  14. Skyline Security

    Security systems

    Downey, CA

    CallAsk it
    Proof for Skyline Security
    Where
    Downey, CA · serves California
    Phone
    (888) 775-9732
    Listing
    Built from public records. Not claimed yet, so call them directly.

  15. Topaz Alarm Corporation

    Security systems

    Downey, CA

    CallAsk it
    Proof for Topaz Alarm Corporation
    Where
    Downey, CA · serves California
    Phone
    (562) 927-0961
    Listing
    Built from public records. Not claimed yet, so call them directly.

  16. Advanced Alarm & Fire, Inc.

    ActiveAlarm Company Operator

    Santa Fe Springs, CA · 4 mi away

    Ask it
    Proof for Advanced Alarm & Fire, Inc.
    License
    DCA BSIS-ACO-7879
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Jul 31, 2027
    Checked
    Oct 23, 2026
    Where
    Santa Fe Springs, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 7879 → California Department of Consumer Affairs search

  17. Allen Alarm Systems Inc

    ActiveAlarm Company Operator

    Paramount, CA · 3 mi away

    Ask it
    Proof for Allen Alarm Systems Inc
    License
    DCA BSIS-ACO-2569
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Mar 31, 2027
    Checked
    Oct 23, 2026
    Where
    Paramount, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 2569 → California Department of Consumer Affairs search

  18. Amr Installs Inc

    ActiveAlarm Company Operator

    Norwalk, CA · 3 mi away

    Ask it
    Proof for Amr Installs Inc
    License
    DCA BSIS-ACO-8090
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    May 31, 2027
    Checked
    Oct 23, 2026
    Where
    Norwalk, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 8090 → California Department of Consumer Affairs search

  19. B & D Security, Inc

    ActiveAlarm Company Operator

    Bellflower, CA · 3 mi away

    Ask it
    Proof for B & D Security, Inc
    License
    DCA BSIS-ACO-6425
    Issuer
    California Department of Consumer Affairs
    Status
    Active
    Class
    Alarm Company Operator
    Expires
    Mar 31, 2027
    Checked
    Oct 23, 2026
    Where
    Bellflower, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 6425 → California Department of Consumer Affairs search

  20. Brennan Estimating Services Inc

    ActiveCorporation registered in SAM.gov

    Santa Fe Springs, CA · 4 mi away

    Ask it
    Proof for Brennan Estimating Services Inc
    SAM.gov registration
    SAM.gov K88BPKZH1JK5
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    May 18, 2027
    Checked
    Oct 23, 2026
    Where
    Santa Fe Springs, CA · serves California
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

More cities in California

San Diego 85Livermore 84Los Angeles 84Sacramento 66San Jose 60Fresno 51Anaheim 37Irvine 35San Francisco 35Riverside 34Bakersfield 29Orange 21Simi Valley 21Fremont 19Stockton 19Van Nuys 19

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