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Best Security System in Connecticut (2026)

48 businesses found · Ranked by quality, not ads

Find top-rated security system businesses in Connecticut. Every business is ranked by Quality Score — our quality metric based on responsiveness, data completeness, and verified reviews. Not who pays the most.

Securitas Security Services USA

East Hartford, CT

Security System

★ 3.3(35 reviews)

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STAYSAFE SECURITY SYSTEMS LLC

Southington, CT

Security System

★ 5.0(28 reviews)

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Safe Home Security

Middletown, CT

Security System

★ 3.7(3736 reviews)

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Welte Electronic Systems LLC

Norwalk, CT

Security System

★ 5.0(11 reviews)

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Allied Universal® Security Services

Stamford, CT

Security System

★ 1.0(2 reviews)

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Prosegur Security USA – Stamford Office

Stamford, CT

Security System

★ 4.5(8 reviews)

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Port Security Services

New Haven, CT

Security System

★ 4.5(20 reviews)

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Now Security Systems Inc

North Haven, CT

Security System

★ 3.2(18 reviews)

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Standard Security Systems

Bridgeport, CT

Security System

★ 4.2(111 reviews)

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Alarm New England Hartford CT

Rocky Hill, CT

Security System

★ 4.7(85 reviews)

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Troy Security Systems

Newtown, CT

Security System

★ 4.8(33 reviews)

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Associated Security Systems, LLC

Wolcott, CT

Security System

★ 5.0(3 reviews)

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Next Generation Alarms

East Hartford, CT

Security System

★ 5.0(4 reviews)

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Soundsafe Security Systems

Stratford, CT

Security System

★ 5.0(3 reviews)

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Property Protection Consulting LLC

Trumbull, CT

Security System

★ 4.9(104 reviews)

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EBC Security LLC

Fairfield, CT

Security System

★ 4.7(28 reviews)

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CT Audio LLC

Bridgeport, CT

Security System

★ 3.9(66 reviews)

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Kennedy Security Services Inc

Greenwich, CT

Security System

★ 5.0(4 reviews)

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Pye-Barker Fire & Safety, formerly Security Solutions, Inc.

Norwalk, CT

Security System

★ 3.8(25 reviews)

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Alert Security Plus

Stamford, CT

Security System

★ 4.7(12 reviews)

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Ursa Security & Control

Plantsville, CT

Security System

★ 5.0(50 reviews)

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Mammoth Security Inc. Norwalk

Norwalk, CT

Security System

★ 5.0(6 reviews)

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Advanced Alarms Security Systems Inc.

North Haven, CT

Security System

★ 4.4(7 reviews)

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Everon

Wallingford, CT

Security System

★ 5.0(162 reviews)

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Sourced Security Solutions

Cromwell, CT

Security System

★ 4.9(8 reviews)

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Command Corporation | Business Security & Fire Systems

East Granby, CT

Security System

★ 4.5(12 reviews)

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Protos Security

Norwalk, CT

Security System

★ 4.2(80 reviews)

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Maximum Sound & Security | Residential & Commercial Security System Services

Plantsville, CT

Security System

★ 4.3(6 reviews)

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Associated Security Corporation

East Hartford, CT

Security System

★ 4.4(29 reviews)

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Hull Alarms LLC

New Hartford, CT

Security System

★ 5.0(7 reviews)

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Electronic Security Control Systems Inc

Bridgeport, CT

Security System

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Hartford Security Services

Rocky Hill, CT

Security System

★ 5.0(7 reviews)

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Mammoth Security Inc. New Haven

New Haven, CT

Security System

★ 5.0(5 reviews)

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ATP Alarms

Hamden, CT

Security System

★ 4.9(411 reviews)

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Pro Tek Security LLC

North Haven, CT

Security System

★ 4.6(21 reviews)

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Advanced CCTV Alarm Systems

New Haven, CT

Security System

★ 4.9(74 reviews)

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Sterling Security Systems Inc

Waterbury, CT

Security System

★ 4.7(86 reviews)

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Lynx Systems LLC

Southington, CT

Security System

★ 5.0(93 reviews)

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Alarm Systems Innovations

Madison, CT

Security System

★ 5.0(4 reviews)

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Allied Universal® Security Services

East Hartford, CT

Security System

★ 3.0(28 reviews)

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The Alarm Company

West Hartford, CT

Security System

★ 5.0(2 reviews)

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Safeguard Security & Surveillance Inc

Windsor Locks, CT

Security System

★ 3.5(66 reviews)

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Integrated Security Solutions

Oakdale, CT

Security System

★ 4.9(13 reviews)

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City Sound Electronics

Bridgeport, CT

Security System

★ 4.4(110 reviews)

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MCI Security Systems

Fairfield, CT

Security System

★ 5.0(3 reviews)

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High class auto sound & security

Bridgeport, CT

Security System

★ 4.6(41 reviews)

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Security Specialists

Stamford, CT

Security System

★ 5.0(4 reviews)

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Systems and Services, LLC

Stamford, CT

Security System

★ 5.0(20 reviews)

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