Since 1990

At Sentry, security comes first.

Sentry is a family-owned and operated security integration company with unparalleled customer service and support. Our burglar alarm systems, custom commercial fire alarms and door access control systems as well as all other low-voltage systems are installed with customer safety and protection at the forefront of every job.

Our low voltage experts can design and install a system custom-tailored to suit your security and surveillance needs. Browse our site to learn about all of Sentry’s available security and communications solutions.

Ranked as one of the top system integrators in the country.

Sentry is ranked as one of Inc 5000 fastest growing private companies for 6 consecutive years. Sentry is also ranked as one of the top 100 System Integrators in the country for the last 10 years.

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Ranked as one of the top system integrators in the country.

Sentry is ranked as one of Inc 5000 fastest growing private companies for 6 consecutive years. Sentry is also ranked as one of the top 100 System Integrators in the country for the last 10 years.

learn more

Unmatched excellence

When it comes to protecting your property, Sentry Communications & Security is the best decision you can make. As top providers in safety and security, Sentry supplies and installs all types of low-voltage security and communications systems including video surveillance, commercial fire alarms and dozens more. For 30 years, thousands of clients spanning the five boroughs of NYC, Long Island, Northern New York, New Jersey and Pennsylvania have relied on Sentry for premium communication and security systems, installations and monitoring solutions.

Our low voltage experts can design and install a system custom-tailored to suit your security and surveillance needs. Browse our site to learn about all of Sentry's available security and communications solutions.

Contact Us

We are happy to discuss our professional security and communication products and services. To be in touch with a Sentry representative, simply give us a call, send us an email or fill out the form below.

Select the Products & Services you are interested in:
Video Surveillance
Fire Alarm Systems
Burglar Alarms Systems
Access Control
Monitoring
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Why We Are One Of The Best Alarm Companies On Long Island

July 15, 2021

For over 30 years, Sentry has been a top provider of alarm companies on Long Island. Residents of Nassau and […]

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Why Live Video Surveillance Is A Must For Your Business

July 6, 2021

Live video surveillance is becoming increasingly crucial for businesses and companies around the globe. The safety of a business or […]

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What is an alarm monitoring center and how does it work

June 21, 2021

The need for alarms and security systems for the building is becoming more and more necessary for small businesses and […]

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