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


Since 1975, CSi has served a wide range of clients with one goal in mind:
Providing high-performing, unified security and communications systems that make users’ lives easier.

No matter the client, we have the ability to design, install, and maintain a wide range of unified solutions, serving as a single point of contact and responsibility. That means our clients save the time, money, and headaches that would have been dedicated to juggling multiple vendors.


Our knowledgeable staff has been building trusted relationships with architects, construction managers, and engineers in Eastern Pennsylvania for over four decades. We work closely with you from design concept to deployment to develop practical, unified solutions. Our team works with design and construction professionals every step of the way to help their clients meet their operational, organizational, communication, and security objectives. We can assist in a number of areas, including:

          • Client meetings
          • Design specifications
          • CAD drawings
          • Systems analysis
          • Cost-benefit studies
          • Best practices and standards
          • Technical evaluations


To ensure optimal performance and protection, security and communication systems must be incorporated directly into the facility design and construction. That’s why CSi works hand-in-hand with contractors to completely unify our state-of-the-art solutions with their work.  In short, we enable contractors to provide added value to their clients without stressing their bottom line or needing to deal with multiple security and communications vendors. At CSi, we know that system design depends on numerous factors, including:
          • Customer objectives
          • Codes and regulations
          • Facility type
          • Interactivity with other systems
          • Adaptability
          • Prioritized risk scenarios
          • Best practices


When the time comes to install or upgrade a system in your facility, don’t go it alone or opt for a number of piecemeal vendors. Instead, trust CSi, a leader in unified security and communications solutions for nearly 40 years.  From system design to installation to monitoring, CSi guides our clients through the process of adding or upgrading a security or communications system. Our number one goal is to provide the best solutions possible while making the lives of our clients as easy as possible. Whatever your facility’s need – access control, intrusion detection, mass notification, video surveillance or anything else – you can trust CSi, a leader in security and communication systems every step of the way.


Facility managers are tasked with coordinating multiple projects, often with little time and few resources to spare. CSi’s streamlined approach to system integration enables facility managers to deal with a single vendor for all their security, life safety, and communications needs.

From access control and intrusion/perimeter detection to everyday communications systems, CSi serves as a single point of contact – saving facility managers the hassle, frustration, and expense typically associated with system installation and implementation.  Just tell us your needs, then leave the rest up to us.


Deploying new systems to a new or existing infrastructure can be daunting, but CSi’s technical know-how and holistic approach to system unification ensure a smooth transition – and we guarantee post-installation support.  Our team’s wide range of technical expertise guides our ability to install multiple systems that not only communicate with each other but with older, legacy systems as well.

Our certified technicians and engineers work with IT professionals to ensure all systems are providing the most reliable, comprehensive services possible. Because we understand that every technical infrastructure is different, we are careful in the selection and implementation of our systems.



For security professionals, vigilance is everything. A reliable, unified set of tools can mean the difference between proactive crime prevention and a potentially dangerous breach.  As an active member of ASIS, CSi specializes in deploying state-of-the-art equipment that enables security professionals to perform their duties optimally.

We know no two security systems are exactly alike. We help security professionals select the best equipment and methodology based on a wide number of factors, including:
          • Codes and regulations
          • Facility type
• Interactivity with other systems
• Prioritized risk scenarios
• Best practices

Let's get started.

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.