On July 1, CSi is getting a new name: Keystone Fire and Security.  >> LEARN MORE

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We have enhanced our product offerings to increase your safety due to COVID-19 with Automatic People Counting and Contagion/Contaminant Proximity Reporting for Genetec Security Systems.


for Security, Life Safety, Audio Visual & Communications

Industry Leader

For over four decades, CSi has been a leader in security and communications systems for businesses, educational institutions, healthcare, government, energy & utilities, law enforcement, retail stores, and more.

Custom Solutions

We deliver customized solutions for access control, intrusion detection, video surveillance, fire detection, critical communications, mass notification, license plate recognition, as well as system monitoring and 24/7 emergency services.

Trusted Partner

We’re not just a vendor or an integrator; we’re a true partner with a vested interest in helping you realize maximum return on investment. Our team of experts can help you deploy, integrate, and maintain the right solution.

security companies in pa

CSi is a partner you can trust.

We offer access to a team of security and communications experts, all of whom are trained in the selection, deployment and maintenance of the industry’s most advanced and modern technology.

Are you looking for a Corporate Security System?
CSi can provide the system you need.

Do away with security companies that only offer limited business security systems. You need commercial security systems that can be scaled and integrated to fit your business’s needs specifically. Choose CSi, the best security company in PA, for your security systems today.

Who are we?
security systems allentown pa

Short for Communication Systems Integrators, LLC, CSi is a top security company that offers commercial security systems for businesses, healthcare facilities, houses of worship, schools, manufacturing and warehousing facilities, as well as correctional facility security systems and more. We largely serve the Allentown, PA, Bethlehem, PA, and Easton, PA areas, but are trusted by businesses as far north as the Pennsylvania-New York Border, as south as Philadelphia, and even parts of New Jersey.

We have provided commercial communication systems and business security system installations for over four decades. During that time, we learned it isn’t enough just to provide one-and-done, turnkey security systems. Our customers deserve something better.

That’s why CSi is invested in becoming a partner with the companies they serve. Not only will you receive the best security systems and communication systems on the market, but you’ll also benefit from our integration and monitoring services.

We want to ensure that our security systems will protect your business and all of its assets, including the well being of your employees.

Access Control Commercial Security Systems in Allentown, PA & the Lehigh Valley

At CSi, we’re a security company that offers access control systems in Allentown, PA, perimeter detection in Lehigh County, PA, and video surveillance in Allentown, PA along with many other services throughout the Lehigh Valley and beyond.  We also provide a variety of communications systems, tailored to fit your needs.

As those who run or maintain a commercial or corporate building know, access control is vital to the protection of valuable information and their employees. You don’t want just anyone to be able to walk into an area that contains valuable assets and data. With data breaches becoming the new norm and corporate businesses paying millions in reparations, it’s more important now than ever for a business security system to be installed by a security company you can trust.

Whether you’re in Allentown, PA, Bethlehem, PA, Easton, PA, or anywhere in the surrounding area, we can help you find the best access control system you need to protect your facility.

Access Control helps you limit the flow of traffic into sensitive areas. This is important on two fronts. The first is that it keeps consumers and clients from wandering into restricted areas. The second is that it ensures your employees are restricted in their access. With an access control system, you can ensure your business is protected from both internal breaches and external threats.

CSi will help ensure your commercial security systems, like access control, are installed correctly, as well as provide services to ensure delivery of the highest return on investment.

Intrusion Detection & Corporate Security Systems are Crucial

Security companies that don’t offer corporate security systems like intrusion detection are only doing half their job. In Allentown, PA and Bethlehem, PA, and for all of our customers, we want our security systems to be something different. That’s why we offer top-notch intrusion detection.

One of the best ways to ensure your business is protected is by deterring criminals from the property and reaching your front door. That’s what intrusion detection aims to satisfy.

We can offer monitoring and motion detectors that connect to fences or perimeter walls around your business. These detectors and video surveillance cameras are connected to your business security system, so the moment that something is detected, you are immediately alerted.  If it is a threat to your business, law enforcement will be notified right away.

Corporate security systems like intrusion detection can also help cut down on the number of false alarms.

Why License Plate Recognition Business Security Systems Matter
License Plate Recognition technology isn’t just for law enforcement.

Few security companies offer business security system installation like license plate recognition (LPR). License plate recognition provides an effective way for businesses to monitor who is accessing their parking lots and when. If you have restricted parking or a parking garage, license plate recognition system installation is a great solution.

For law enforcement and municipal parking authorities, license plate recognition systems can help detect stolen cars, find vehicles involved in other crimes like Amber Alerts or hit and runs, indicate when a car has exceeded parking space time limits, and more.

Security systems shouldn’t just be about protecting the inside of your business. They should also limit the chances of criminal activity occurring outside, too.


Let CSi help with an on-site free consultation of your security, life safety, or communication system.  Our team of experts will work with you to assess your current system and provide recommendations and industry best practices to maximize your investment.