Sales: (717) 541-0212 | Service: (717) 219-7017

Smart Home Security

With Intelligent Security Systems Installed By Knight Security, You're Connected At Home, At Work And On The Go.

Small Business Security

Interactive Services from Knight Security keep you connected to your business, employees and assets wherever you are on PCs, iOS and Android™ smart devices.

New Home Construction

From construction companies to new home owners, we offer security systems and lifestyle options that protect & enhance new construction projects in a variety of ways.

Smart, Simple Security for Home or Business

Remote Security

Remotely arm, disarm or check the status of your security system.

Real Time Alerts

Receive e-mails, text messages or video alerts of important events in real-time. Know when a child arrives home from school or opening and closing reports for business.

Live Video

View live video on up to six cameras at a time—a great way to keep an eye on employees, property, kids, or elderly relatives.

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Over 3 Decades Of Superior Installation & Monitoring

Knight Security Systems, Inc. was started in 1979 by Robert E. Maley, a retired Pennsylvania State Police Trooper, as an independent, owner operated security company. Today, we are leaders in residential and commercial security solutions specializing in comprehensive security, fire and life safety systems for installations ranging from single-family homes to major retail centers.


The Brightest Engineers

24/7 Alarm Monitoring

Custom Security Solutions

What Our Customers Are Saying

5 star alarm srvice

"Extraordinary Experience"

“Our experience with Knight Security has been extraordinary since we made the switch. They always respond to any problem we have within the hour and fix it immediately, they always have the equipment to do the job right the first time.

We never have to worry about the security of our businesses anymore. Keith and his staff are very knowledgeable with what they are doing and keep us up to date on the newest technology to secure all of our businesses.”

Erick Carter
Dockside Willies, Dukes Bar & Grill, and Rock Bass Grill

"Admirable Standard"

“Knight Security sets an admirable standard for security systems companies.  In my ten years working with Knight, I have interacted with a knowledgeable and helpful office support team. The security monitoring department has been consistently competent and dedicated to my protection. The techs who come out to install or check my system are skilled and good communicators on their area of expertise. All of the above factors have provided for my on-going association and satisfaction with this locally owned and operated business.”

Harrisburg, PA

"Pleasant and Knowledgeable"

“Knight Security Systems, Inc., offers the most comprehensive and the most affordable security system to meet your home and
business needs. The master technicians and the pleasant and knowledgeable staff of Knight continue to give me excellent service and peace of mind. When I call during regular business hours, I speak to a person, not a machine. That is why I have satisfaction guaranteed!!!”

Harrisburg, PA

About Us

From intrusion to fire and video to access control, Knight Security Systems, Inc. offers the industry’s most advanced technologies and products, combined with technical support and customer service that’s second to none. 

Email Newsletter

Stay up to date with relevant news, safety tips and special offers from Knight Security.


5879 Avis Lane
Harrisburg, PA 17112-1606 | Phone: 

Office: (717) 541-0212
PA State License #040745